Make sure recents animation input consumer is above the top task

- Now that we are animating multiple tasks together for staged split
  we need to ensure the layer is above the top most task

Bug: 195427335
Test: atest RecentsAnimationControllerTest
Change-Id: Ieb4b0b0de730a9b3ba3725955c5baac4c0f1c4c8
2 files changed