Fix possible race conditions when cancelling animations

Since the surface is being released by the SurfaceAnimator, it was
possible that SurfaceAnimationRunner was still applying surface
changes on a released surface.

Solve this by introducing a cancel-lock on which all surface
operations are synchronized on.

Bug: 64674361
Test: SurfaceAnimationRunnerTest
Change-Id: I06ee9e8270f492faa1cbfd84a09a68c9a1a09ade