Merge "Better support transient and persistent taskbar in taskbar's overlays."...

Merge "Better support transient and persistent taskbar in taskbar's overlays." into tm-qpr-dev am: a76222d2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20693438



Change-Id: I54a1a4198047d658def291ec70fc8530b42ad6b7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>