Touch events doesn't propagate properly to Wayland Client, if Flickable.pressDelay is set.

Steps:

1. Run pure-qml (HW_example.zip) as Wayland compositor
2. Run HW_example as Wayland client
3. Try to interact with HW_example using touchscreen (click on Button, scroll ListView,..)
4. Change pressDelay and try to interact with HW_example using touchscreen

If Flickable.pressDelay > 0, then touch does not work correctly (Button is not clicked, ListView is not scrolled). If Flickable.pressDelay=== 0, then HW_example works fine.

The root cause seems to be similar to QTBUG-77202.