Fix flickering when cancel cross activity animation.

Cross activity animation use different spring animations to control
different object/status, so the finish stage of each animations are
arrived separatly. For the cancel animation case, force update the
closing target to final stage before release all animation leashes.

Bug: 230798396
Test: manual enter/cancel animation and verify no flicker.
Change-Id: I82d99ce4bc922cf7ecb7013ef532e8b18c47c35a