D6828: Send QKeyEvent with Qt::Key as expected by Qt to internal windows

[Martin Flöser]

graesslin added a dependency: D6818: Implement support for window shortcuts for 
Wayland windows.

REVISION DETAIL
  https://phabricator.kde.org/D6828

To: graesslin, #kwin, #plasma
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart, lukas