[AA+] Add LAUNCHER_ALLAPPS_SWITCHED_TO_WORK_TAB & LAUNCHER_ALLAPPS_SWITCHED_TO_MAIN_TAB events. am: 9aac07e87d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13496878

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib2c10c00ea98bdba7d8238b993657aae7c2a6daf