windowManager: ensure actor resize clone dies with actor

If a window gets destroyed right before it's resize
animation starts the user can get confronted with an undead
zombie clone that doesn't go away.

This commit makes sure said clones get reaped with their
actors.
1 job for <span class="ref-name">wip/reap-the-undead-clones</span> in 1 minute and 49 seconds (queued for 1 second)
Status Job ID Name Coverage
  Source Check
passed #209048
js_check

00:01:49