Merge "Fix invoking transient taskbar in desktop windowing prototypes" into tm-qpr-dev am: 05abfa49c8 am: 02bf2bcfa3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21343843

Change-Id: Icc82db75e28f0aeb9c148606718cd9c7dba2a147
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>