Merge "Revert "[Media] Update background gradient scrim to use album theme...

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

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



Change-Id: Id5e76f1364d37bc65115525c8a9ce26dd8b8b65c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>