Merge "Seamless handoff between stashed handle and taskbar." into tm-qpr-dev am: 6bb01ee8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21486650



Change-Id: I3b2f7b368eb7007886e415391585e3725d9dcd82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>