qtwayland: reverting back to old version

* the new version currently does not bring any client frames to the compositor and the
  windows stays black/transparent
* we have to upgrade sooner or later but we need more time to solve this and possible
  other bugs

Signed-off-by: Simon Busch <morphis@gravedo.de>
luna-next: don't apply patch needed for newer qtwayland

* as we're revert to our old qtwayland version we don't need the additional checks in our
  compositor implementation but keep it to bring it easily back later

Signed-off-by: Simon Busch <morphis@gravedo.de>