Merge "Auto-stash taskbar when locking device" into tm-qpr-dev am: 1a09d4a2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22196304



Change-Id: I3b35873bda6a7e65e4b0b290a25e278fd9c5efe9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>