Do not allow PiP stash over DisplayCutout

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/dHnahAkfvVeHelqxMMiWGg
Bug: 222223451
Bug: 229047277
Bug: 229064630
Test: follow the reproduce steps in bug, see video
Change-Id: Ie1006dae08294300a92e713b239217e57d79c2e0