Schedule workspace repaint for destroyed clients

We need to schedule a workspace repaint in case no effect is going to
animate the window.

The workspace repaint is issued before creating a Deleted because the
latter takes the owner of the effect window, which means that after an
instance of Deleted has been created, visibleRect() returns the frame
geometry.

CCBUG: 425294


(cherry picked from commit 12e59f9a)