QAbstractEventDispatcher::hasPendingEvents() returns false resulting in test
playback racing ahead causing issues. Decided to use
QAbstractEventDispatcher::aboutToBlock() event to continue with event queue
even when a modal-dialog popups. On Mac however, that signal seems to get
fired even when menus are shown. So putting a longer delay when continuing
event due to aboutToBlock() thus if the event can be processed along the
normal path then this side-path can be skipped.