Canceling ViewPropertyAnimator now removes pending actions

Normally, calling cancel() on ViewPropertyAnimator() will cancel any
running animations as well as any associated actions (layers and
start/end actions). But if the animation is canceled before the first
frame, these other actions are still pending and will not be canceled.

This fix also cancels these pending actions.

Issue #17296082 VPA.cancel() doesn't clear the end action

Change-Id: If104d21c1e2d64516500048a06ba217284732ef0