Merge "Support alt+tab for desktop tasks" into udc-qpr-dev am: 40f9151ff0 am: 597271d51e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23335955

Change-Id: I7943758a0bf02dd648527031ace6ff43a58a7b92
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>