Update the FileIO Aliases (#4186)

* Update the FileIOAlias naming to make the cache, project root and engine
root paths more clear

The alias of `@root@`, `@assets@`, and `@projectplatformcache@` has been
collapsed to `@projectproductassets@`

The alias of `@devroot@` and `@engroot@` has been collapsed to
`@engroot@`

The alias of `@devassets@` and `@projectroot@` has been collapsed to
`@projectroot@`

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated use of devassets and devroot properties in python

Those properties now use projectroot and engroot

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updating the alias @engroot@ alias path comment in each platform specific LocalFileIO_*.cpp file

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Removed hardcoded size of 9 for the product asset alias.

The ResolvePath function now just appends the @projectproductassets@
alias with the input path

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Remove duplicate @projectproductassets@ check in ProcessFileTreeRequest

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Fix for typos in Hydra python test

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated LocalFileIO::Copy call on Windows to use the Unicode aware CopyFileW API

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated the AWSMetreicsGemAllocatorFixture to properly suppress asset
cache write errors for Test file creation.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Removed unneeded call to set the @projectproductasstes@ alias at the bottom of the AssetSeedManagerTest SetUp

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Added a deprecated alias map to the FileIO System

When a deprecated alias is accessed, the FileIO System logs an AZ_Error and indicates the alias that should be used

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated python test scripts to use the projectroot binding

Retrieving the AutomatedTesting project path based on "<devroot>/AutomatedTesting" has been removed.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated references to devroot and devgame within the codebase

The GetAbsoluteDevGameFolderPath functions has been replaced with direct call to AZ::Utils::GetProjectPath
The GetAbsoluteDevRootFolderPath functions has been replaced with direct calls to AZ::Utils::GetEnginePath

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated <engroot>/AutomatedTesting references to projectroot


Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Replaced references that assumes the project path is <engroot>/AutomatedTesting with <projectroot> in the AutomatedTesting python test

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Correct casing in emfxworkspace file


Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Removed newly added AppendPathParts function
Removed the Path constructors which accepts a PathIterable instance

The PathIterable isn't safe to return to a user of the Path class as it might be referencing temporary paths supplied via PathView arguments

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Fixed unused parameter warning

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Undid change to the LexicallyProximate function to set the path result to the base path.

It needs to return the *this path if the pathResult is empty

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Moved the LocalFileIO ConvertToAbsolutePath implementations to AZ::Utils

Fixed the ConvertToAbsolutePath implementation for Unix platforms to use a buffer that is size PATH_MAX(4096 on all our supported Unix platforms).
Because the buffer before was AZ::IO::MaxPathLength which as a size of 1024, this was resulting in the Unix `realpath` function smashing the stack when it converts a path to an absolute path that is longer than 1024 characters

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated the EditorCore.Tests to attach the AZ Environment to the EditorCore shared library that is statically loaded on launch.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Fixed for DeprecatedAlaisesKeyVisitor Visit function causing the non string_view overloads being hidden causing a hidden base class function warning

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Changed the AWSMetricsGemMock to use a temporary for writing test assets

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated the LocalFileIO::ResolvePath function to use HasRootPath to determine if a path starts with a root path such as "D:", "D:/" or "/"

IsAbsolute was not the corect check as the path of "D:" is a relative
path.
To be absolute according to the Windows the path must have a root
directory. i.e "D:/" or "D:\"

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Removed absolute path comment from LocalFile_UnixLike.cpp and LocalFile_Android.cpp FindFiles implementations
Updated the ConvertToAlias to supply an AZ::IO::FixedMaxPath

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Replaced usage of the @projectproductassets@ alias with @engroot@ when referring to the LmbrCentral source folder in the CopyDependencyBuilderTest and the SeedBuilderTests

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated the ScriptCanvas Upgrade Tool to output backed up files to the
Project User Path instead of the engine root

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Fixed whitespacing issues in Application.cpp

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Remove unnecessary creation of a FixedMaxPath in the UpgradeTool.cpp

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Modified testSeedFolder variable in the SeedBuilderTests to use the
@engroot@ alias instead of @projectproductassets@/.. alias when
referring to the LmbrCentral Gem source path

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Updated references to the Project Asset Cache in the PythonTests.

Those tests no longer use the logic `azlmbr.paths.projectroot / "Cache" / "pc"` to retrieve a path to the cache root but instead the `azlmbr.paths.projectproductassets` constant

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Fixed the FileIO Deprecated Alias test on Windows

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Removing @projectsourceassets@ alias, as it is only used once.

Updated the PhysX EditorSystemComponent.cpp to query the ProjectPath
form the SettingsRegistry.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Replaced @projectproductassets@ alias with @products@

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Rollback changes to the PhysX EditorSystemComponent.cpp

The changes to use the ProjectPath from the SettingsRegistry has been implemented in PR #4497

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

Code/Editor/Plugins/EditorAssetImporter/SceneSerializationHandler.cpp

@@ -7,9 +7,11 @@
  */
 
 #include <AzCore/Debug/Profiler.h>
+#include <AzCore/IO/Path/Path.h>
 #include <AzCore/IO/SystemFile.h>
 #include <AzCore/std/algorithm.h>
 #include <AzCore/std/string/conversions.h>
+#include <AzCore/Settings/SettingsRegistryMergeUtils.h>
 #include <AzFramework/StringFunc/StringFunc.h>
 #include <AzToolsFramework/API/EditorAssetSystemAPI.h>
 #include <AzToolsFramework/Debug/TraceContext.h>
@@ -50,22 +52,15 @@ namespace AZ
             return nullptr;
         }
 
-        AZStd::string cleanPath = filePath;
-        if (AzFramework::StringFunc::Path::IsRelative(filePath.c_str()))
+        AZ::IO::Path enginePath;
+        if (auto settingsRegistry = AZ::SettingsRegistry::Get(); settingsRegistry != nullptr)
         {
-            const char* absolutePath = nullptr;
-            AzToolsFramework::AssetSystemRequestBus::BroadcastResult(absolutePath, 
-                &AzToolsFramework::AssetSystemRequestBus::Events::GetAbsoluteDevRootFolderPath);
-            AZ_Assert(absolutePath, "Unable to retrieve the dev folder path");
-            AzFramework::StringFunc::Path::Join(absolutePath, cleanPath.c_str(), cleanPath);
-        }
-        else
-        {
-            // Normalizing is not needed if the path is relative as Join(...) will also normalize.
-            AzFramework::StringFunc::Path::Normalize(cleanPath);
+            settingsRegistry->Get(enginePath.Native(), AZ::SettingsRegistryMergeUtils::FilePathKey_EngineRootFolder);
         }
 
-        auto sceneIt = m_scenes.find(cleanPath);
+        AZ::IO::Path cleanPath = (enginePath / filePath).LexicallyNormal();
+
+        auto sceneIt = m_scenes.find(cleanPath.Native());
         if (sceneIt != m_scenes.end())
         {
             AZStd::shared_ptr<SceneAPI::Containers::Scene> scene = sceneIt->second.lock();
@@ -98,14 +93,14 @@ namespace AZ
         }
 
         AZStd::shared_ptr<SceneAPI::Containers::Scene> scene = 
-            AssetImportRequest::LoadSceneFromVerifiedPath(cleanPath, sceneSourceGuid, AssetImportRequest::RequestingApplication::Editor, SceneAPI::SceneCore::LoadingComponent::TYPEINFO_Uuid());
+            AssetImportRequest::LoadSceneFromVerifiedPath(cleanPath.Native(), sceneSourceGuid, AssetImportRequest::RequestingApplication::Editor, SceneAPI::SceneCore::LoadingComponent::TYPEINFO_Uuid());
         if (!scene)
         {
             AZ_TracePrintf(Utilities::ErrorWindow, "Failed to load the requested scene.");
             return nullptr;
         }
 
-        m_scenes.emplace(AZStd::move(cleanPath), scene);
+        m_scenes.emplace(AZStd::move(cleanPath.Native()), scene);
         
         return scene;
     }