Merge "Revert "[Media] Update background gradient scrim to use album theme colors."" into tm-dev am: 783f9c90 am: 026ca0bb am: 7efd24eb am: 4ff33f0c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18027822



Change-Id: Ia833055b9316073e72837d47e1ae00d62e482e67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>