Merge "Fixes NPE with LAUNCHER_ALLAPPS_EXIT log event." into sc-dev am: 9012515fef

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13532487

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7ae847272dbfff919ca3ec20bdb6599f5a36e339