This is a quickfix for Controls 2 Popup, Drawer, Menu and Dialog.
We pretend everything derived from QtQuick.Controls.Popup
is an item instead of a QQObject.
Change-Id: I603dce8a1a1b08df3e2c1dccc0fa57e7ccef0800
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>