[Editor] Do not load StrideDefaultAssetsPlugin from module.

It currently hardcodes loading the templates from a package which causes some tests to fail.

Partially reverts c98c72e

sources/editor/Stride.Assets.Presentation/Module.cs

@@ -8,11 +8,10 @@
 using Stride.Assets.Entities;
 using Stride.Assets.Presentation.Templates;
 using Stride.Assets.SpriteFont;
-using Stride.Rendering;
-using Stride.Rendering.Materials;
-using Stride.Core.Assets.Editor.Services;
 using Stride.Editor.Preview;
 using Stride.Editor.Preview.View;
+using Stride.Rendering;
+using Stride.Rendering.Materials;
 
 namespace Stride.Assets.Presentation
 {
@@ -29,7 +28,6 @@ public static void Initialize()
             // We need access to the AssetQuantumRegistry from the SessionTemplateGenerator so for now we register graph types in the module initializer.
             AssetQuantumRegistry.RegisterAssembly(typeof(Module).Assembly);
             AssetPreview.DefaultViewType = typeof(StridePreviewView);
-            AssetsPlugin.RegisterPlugin(typeof(StrideDefaultAssetsPlugin));
             // Register default template
             StrideTemplates.Register();
             // Initialize translation

sources/editor/Stride.GameStudio/Program.cs

@@ -235,8 +235,7 @@ private static async void Startup(UFile initialSessionPath)
             var mru = new MostRecentlyUsedFileCollection(InternalSettings.LoadProfileCopy, InternalSettings.MostRecentlyUsedSessions, InternalSettings.WriteFile);
             mru.LoadFromSettings();
             var editor = new GameStudioViewModel(serviceProvider, mru);
-            // HACK force loading the default plugin first
-            var _ = typeof(StrideDefaultAssetsPlugin).Name; // FIXME load plugin assemblies from folders in a defined order (config file?)
+            AssetsPlugin.RegisterPlugin(typeof(StrideDefaultAssetsPlugin));
             AssetsPlugin.RegisterPlugin(typeof(StrideEditorPlugin));
 
             // Attempt to load the startup session, if available