Marco Martin authored Sep 16, 2022 and Vlad Zahorodnii committed Sep 16, 2022

the existence of Window is bound to the one of workspace so it
will always be there.
We also need to check the window sizes before workspace is done
initializing,
otherwise when KWin restarts and there are maximized windows, they won't
be resized to take panels into account and will always span the full
screen.


(cherry picked from commit e853f5fe)