Merge "Improve enter split transition" into tm-qpr-dev am: 9ab7dedcdd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19458153

Change-Id: I0ece5d1456a72e94188732b16a7cd6abdad907e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>