Merge "Add overview taskbar split support for 3P launcher" into tm-qpr-dev am: 0a905650

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21311163



Change-Id: I83f88af4546c81b8fc5a8f231ff2883f91d5e0b6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>