More specific component error messaging and modes for native UI to prevent blocking dialog in some applications

Code/Sandbox/Editor/CryEdit.cpp

@@ -557,7 +557,6 @@ public:
     {
         bool dummy;
         QCommandLineParser parser;
-        QString appRootOverride;
         parser.addHelpOption();
         parser.setSingleDashWordOptionMode(QCommandLineParser::ParseAsLongOptions);
         parser.setApplicationDescription(QObject::tr("Open 3D Engine"));
@@ -643,7 +642,7 @@ public:
             option.second = parser.value(option.first.valueName);
         }
 
-        m_bExport = m_bExport | m_bExportTexture;
+        m_bExport = m_bExport || m_bExportTexture;
 
         const QStringList positionalArgs = parser.positionalArguments();
 
@@ -4362,6 +4361,18 @@ extern "C" int AZ_DLL_EXPORT CryEditMain(int argc, char* argv[])
     {
         EditorInternal::EditorToolsApplication AZToolsApp(&argc, &argv);
 
+        {
+            CEditCommandLineInfo cmdInfo;
+            if (!cmdInfo.m_bAutotestMode && !cmdInfo.m_bConsoleMode && !cmdInfo.m_bExport && !cmdInfo.m_bExportTexture &&
+                !cmdInfo.m_bNullRenderer && !cmdInfo.m_bMatEditMode && !cmdInfo.m_bTest)
+            {
+                if (auto nativeUI = AZ::Interface<AZ::NativeUI::NativeUIRequests>::Get(); nativeUI != nullptr)
+                {
+                    nativeUI->SetMode(AZ::NativeUI::Mode::UI);
+                }
+            }
+        }
+
         // The settings registry has been created by the AZ::ComponentApplication constructor at this point
         AZ::SettingsRegistryInterface& registry = *AZ::SettingsRegistry::Get();
         AZ::SettingsRegistryMergeUtils::MergeSettingsToRegistry_AddBuildSystemTargetSpecialization(

Code/Sandbox/Editor/EditorToolsApplication.cpp

@@ -91,10 +91,12 @@ namespace EditorInternal
     void EditorToolsApplication::StartCommon(AZ::Entity* systemEntity)
     {
         AzToolsFramework::ToolsApplication::StartCommon(systemEntity);
+
+        m_StartupAborted = m_moduleManager->m_quitRequested;
+
         if (systemEntity->GetState() != AZ::Entity::State::Active)
         {
             m_StartupAborted = true;
-            return;
         }
     }
 
@@ -106,6 +108,7 @@ namespace EditorInternal
         AzToolsFramework::ToolsApplication::Start({}, params);
         if (IsStartupAborted() || !m_systemEntity)
         {
+            AzToolsFramework::ToolsApplication::Stop();
             return false;
         }
         return true;