Merge "Finish unfold Shell transition if animation has finished already" into udc-qpr-dev am: 5ecf8bac36

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24510150

Change-Id: I402c02bb32dac43c3ea6bc20ffd191d945cd51f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>