Use crop method that allows invalid rect

Restore to be the same as legacy WindowAnimationSpec that
uses setWindowCrop as well. In case the animation's
transform.getClipRect causes to an invalid rect. And setCrop
will throw exception for that. But it should be fine to set
invalid rect as clearing crop.

Bug: 400316924
Flag: EXEMPT bugfix
Test: Use makeClipRevealAnimation with invalid rect to launch app
Change-Id: I8987d699f79af50f70cee545f90efb37c9f3b268