Merge "Animate PiP away on inset changes." into tm-qpr-dev am: 3aac107972 am: 1099f31450

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20349632

Change-Id: Ib96f863ad9e0fc8b316b775b2b88ce2c160eb1cd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>