[FancyZones][Fix Bug] delete layout write wrong date to json file (#37763)

fix delete layout write json file bug

Co-authored-by: Zhaopeng Wang (from Dev Box) <zhaopengwang@microsoft.com>

src/modules/fancyzones/editor/FancyZonesEditor/MainWindow.xaml.cs

@@ -487,10 +487,10 @@ namespace FancyZonesEditor
                     }
                 }
 
+                model.Delete();
                 App.FancyZonesEditorIO.SerializeAppliedLayouts();
                 App.FancyZonesEditorIO.SerializeCustomLayouts();
                 App.FancyZonesEditorIO.SerializeDefaultLayouts();
-                model.Delete();
             }
         }