Merge "[AA+] Add LAUNCHER_ALLAPPS_ENTRY, LAUNCHER_ALLAPPS_EXIT events." into sc-dev am: 67171e2335

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13463978

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I154fa59e8bc8999395b76fa925f7acb04ec3dd65