[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: I6e41cc788c691c87cc07e240d051019d1bc1c777