Merge pull request #4808 from sbwalker/dev

fix compilation warning

Oqtane.Maui/App.xaml.cs

@@ -7,7 +7,7 @@ public partial class App : Application
 		InitializeComponent();
 	}
 
-    protected override Window CreateWindow(IActivationState? activationState)
+    protected override Window CreateWindow(IActivationState activationState)
     {
         return new Window(new MainPage());
     }