Set title on maui-blazor/-app template window (#25426)

Fixes #25338

Author: Eilon

src/Templates/src/templates/maui-blazor-solution/MauiApp.1/App.xaml.cs

@@ -9,6 +9,6 @@ public App()
 
     protected override Window CreateWindow(IActivationState? activationState)
     {
-        return new Window(new MainPage());
+        return new Window(new MainPage()) { Title = "MauiApp.1" };
     }
 }

src/Templates/src/templates/maui-blazor/App.xaml.cs

@@ -9,6 +9,6 @@ public App()
 
 	protected override Window CreateWindow(IActivationState? activationState)
 	{
-		return new Window(new MainPage());
+		return new Window(new MainPage()) { Title = "MauiApp.1" };
 	}
 }