fix: theme not loaded when displaying the message box when an instance is already running

Author: Kryptos-FR

sources/launcher/Stride.Launcher/App.axaml.cs

@@ -44,8 +44,6 @@ public override void OnFrameworkInitializationCompleted()
                 DataContext = InitializeMainViewModel()
             };
         }
-
-        base.OnFrameworkInitializationCompleted();
     }
 
     private static MainViewModel InitializeMainViewModel()
@@ -64,3 +62,9 @@ private static IViewModelServiceProvider InitializeServiceProvider()
         return new ViewModelServiceProvider(services);
     }
 }
+
+// This app is used for the crash report or for the notification when an instance is already running
+internal sealed class MinimalApp : App
+{
+    public override void OnFrameworkInitializationCompleted() { }
+}

sources/launcher/Stride.Launcher/Launcher.cs

@@ -101,7 +101,7 @@ async Task AppMainAsync(CancellationTokenSource cts)
         static void DisplayError(string message, MessageBoxImage image)
         {
             // Note: because we are not running from the main loop, we have to start a new app
-            Program.RunNewApp<Application>(AppMain);
+            Program.RunNewApp<MinimalApp>(AppMain);
 
             CancellationToken AppMain(Application app)
             {
@@ -194,7 +194,7 @@ static async Task<bool> DisplayMessageAsync(string message)
 
     private static void CrashReport(CrashReportArgs args)
     {
-        Program.RunNewApp<Application>(AppMain);
+        Program.RunNewApp<MinimalApp>(AppMain);
 
         CancellationToken AppMain(Application app)
         {