fix the issue that window cannot move to top while clicking system tr…

…ay icon

src/Starward/App.xaml.cs

@@ -121,6 +121,7 @@ public void EnsureMainWindow()
     {
         m_window ??= new MainWindow();
         m_window.Activate();
+        m_window.Show();
     }
 
 

src/Starward/MyWindows/WindowEx.cs

@@ -74,6 +74,7 @@ public unsafe virtual IntPtr BridgeSubclassProc(HWND hWnd, uint uMsg, IntPtr wPa
     public virtual void Show()
     {
         AppWindow.Show(true);
+        AppWindow.MoveInZOrderAtTop();
         User32.SetForegroundWindow(WindowHandle);
         WeakReferenceMessenger.Default.Send(new WindowStateChangedMessage(false));
     }