Merge "Revert "[Bouncer] Refine entry animation scrimmed."" into tm-qpr-dev...

Merge "Revert "[Bouncer] Refine entry animation scrimmed."" into tm-qpr-dev am: 16a8a796 am: 0fc8f1f0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20860901



Change-Id: I1d14d6d6665798008d8a3cc1da165245093b8d58
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>