Merge "Add a way to fade out taskbar view when closing an app in the taskbar." into tm-qpr-dev am: 149246f077 am: ce06cf89b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22141153

Change-Id: I919b45021c1fbc2a5d5c30c2d5eca71a672cd5be
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>