Merge "[pm] fix crash caused by race condition onUidGone" into udc-dev am: a3aa00e2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23678532



Change-Id: I7b9886f3dc7c3faae8c6fbf587af89b7258a33d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>