[automerger skipped] Merge "Animate QS alpha on split shade pull down" into sc-v2-dev am: 59d7598b -s ours

am skip reason: skipped by user dupin

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16011176

Change-Id: Ia5d0beff712b4ad5a9b6fd75af04b2d288967872