Merge "Handle swipe down on taskbar to stash" into tm-qpr-dev am: 2b8b4795

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22147222



Change-Id: I6d774a769e11294efd0b0bd39429807528176b18
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>