Merge "Set fullscreen mode to task at the end of exit-pip animation" into udc-dev am: 35f2750e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22929277



Change-Id: I71fb1cee7685d9c9f6ecd8bee1eedf647cb77fb6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>