Merge "Revert "Fix scrim turning opaque during occlusion animation."" into...

Merge "Revert "Fix scrim turning opaque during occlusion animation."" into tm-qpr-dev am: 48655e0c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20443395



Change-Id: I10756ea3be7d681b67fe52017e4c0f924b11a09c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>