fix: resolve remaining Button type ambiguity at line 1010

Author: Frank

MainWindow.xaml.cs

@@ -1007,7 +1007,7 @@ private void FilterChanged(object sender, SelectionChangedEventArgs e)
 
     private void StatusSummaryButton_Click(object sender, RoutedEventArgs e)
     {
-        if (sender is not Button button || button.Tag is not string filter)
+        if (sender is not System.Windows.Controls.Button button || button.Tag is not string filter)
         {
             return;
         }