Remove file size limits when loading prefabs and prefab-based-levels

Code/Framework/AzToolsFramework/AzToolsFramework/Entity/PrefabEditorEntityOwnershipService.cpp

@@ -185,13 +185,7 @@ namespace AzToolsFramework
     bool PrefabEditorEntityOwnershipService::LoadFromStream(AZ::IO::GenericStream& stream, AZStd::string_view filename)
     {
         Reset();
-        // Make loading from stream to behave the same in terms of filesize as regular loading of prefabs
-        // This may need to be revisited in the future for supporting higher sizes along with prefab loading
-        if (stream.GetLength() > Prefab::MaxPrefabFileSize)
-        {
-            AZ_Error("Prefab", false, "'%.*s' prefab content is bigger than the max supported size (%f MB)", AZ_STRING_ARG(filename), Prefab::MaxPrefabFileSize / (1024.f * 1024.f));
-            return false;
-        }
+
         const size_t bufSize = stream.GetLength();
         AZStd::unique_ptr<char[]> buf(new char[bufSize]);
         AZ::IO::SizeType bytes = stream.Read(bufSize, buf.get());

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabLoader.cpp

@@ -74,7 +74,7 @@ namespace AzToolsFramework
                 return InvalidTemplateId;
             }
 
-            auto readResult = AZ::Utils::ReadFile(GetFullPath(filePath).Native(), MaxPrefabFileSize);
+            auto readResult = AZ::Utils::ReadFileWithNoSizeLimit(GetFullPath(filePath).Native());
             if (!readResult.IsSuccess())
             {
                 AZ_Error(

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabLoaderInterface.h

@@ -21,8 +21,6 @@ namespace AzToolsFramework
 {
     namespace Prefab
     {
-        constexpr size_t MaxPrefabFileSize = 1024 * 1024;
-
         /*!
          * PrefabLoaderInterface
          * Interface for saving/loading Prefab files.