Merge "Fade in/out taskbar bg alpha when unstash/stashing." into udc-dev am:...

Merge "Fade in/out taskbar bg alpha when unstash/stashing." into udc-dev am: 613cc95c am: 004ed77d am: 883ce5f1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23696768



Change-Id: Ibebaae0d983cf356ce01f278874589a4714f9cab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>