[GUI] Allow the app to crash in DEBUG mode

DiscordChatExporter.Gui/Bootstrapper.cs

@@ -24,11 +24,13 @@ namespace DiscordChatExporter.Gui
             builder.Bind<IViewModelFactory>().ToAbstractFactory();
         }
 
+#if !DEBUG
         protected override void OnUnhandledException(DispatcherUnhandledExceptionEventArgs e)
         {
             base.OnUnhandledException(e);
 
             MessageBox.Show(e.Exception.ToString(), "Error occured", MessageBoxButton.OK, MessageBoxImage.Error);
         }
+#endif
     }
 }