Merge "[wm] schedule animation instead of a full traversal at the end of a transition" into udc-qpr-dev am: 08a44c95a0 am: 883823c14d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24708696

Change-Id: I0cd1b67673eaa18d0dec22abd89e500b7d544220
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>