iOS: filter responder actions from menu sync

Follow up from b494d85. We need to filter the responder
actions after a sync as well, otherwise they will be
added back if a menu item e.g changes text.

Change-Id: I2ecbcc292400ada97a8e29d4b97f087349d8a061
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>

src/plugins/platforms/ios/qiosmenu.mm

@@ -369,7 +369,7 @@ void QIOSMenu::syncMenuItem(QPlatformMenuItem *)
 
     switch (m_effectiveMenuType) {
     case EditMenu:
-        [m_menuController setVisibleMenuItems:visibleMenuItems()];
+        [m_menuController setVisibleMenuItems:filterFirstResponderActions(visibleMenuItems())];
         break;
     default:
         [m_pickerView setVisibleMenuItems:visibleMenuItems() selectItem:m_targetItem];