Move PopupsPage to IntegrationTestApp

samples/ControlCatalog/MainView.xaml

@@ -139,9 +139,6 @@
       <TabItem Header="Pointers">
         <pages:PointersPage />
       </TabItem>
-      <TabItem Header="Popups">
-        <pages:PopupsPage />
-      </TabItem>
       <TabItem Header="ProgressBar">
         <pages:ProgressBarPage />
       </TabItem>

samples/IntegrationTestApp/MainWindow.axaml.cs

@@ -93,6 +93,7 @@ namespace IntegrationTestApp
                 new("Slider", () => new SliderPage()),
                 new("Window Decorations", () => new WindowDecorationsPage()),
                 new("Window", () => new WindowPage()),
+                new("Popups", () => new PopupsPage()),
             ];
         }
     }

samples/ControlCatalog/Pages/PopupsPage.xaml → samples/IntegrationTestApp/Pages/PopupsPage.axaml

@@ -1,6 +1,6 @@
-<UserControl x:Class="ControlCatalog.Pages.PopupsPage"
-             xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="IntegrationTestApp.Pages.PopupsPage">
   
   <StackPanel Orientation="Vertical" Spacing="10">
     

samples/ControlCatalog/Pages/PopupsPage.xaml.cs → samples/IntegrationTestApp/Pages/PopupsPage.axaml.cs

@@ -7,21 +7,16 @@ using Avalonia.Layout;
 using Avalonia.Markup.Xaml;
 using Avalonia.Media;
 
-namespace ControlCatalog.Pages;
+namespace IntegrationTestApp.Pages;
 
-public class PopupsPage : UserControl
+public partial class PopupsPage : UserControl
 {
     private Popup? _popup;
     private Popup? _topMostPopup;
+
     public PopupsPage()
     {
         InitializeComponent();
-
-    }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
     }
 
     private void ButtonLightDismiss_OnClick(object sender, RoutedEventArgs e)