Merge "Avoid recursive destruction from exit animation done" into tm-dev am:...

Merge "Avoid recursive destruction from exit animation done" into tm-dev am: 73dfe3e7 am: 50938048 am: 7f5f2a5a am: c0a34a90

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18753583



Change-Id: I548de1b9a56def7c470b9322d7860631a164eb72
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>