Merge "Adding dither to workspace scrim" into tm-qpr-dev am: e8319618 am: 908da1be

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21678679



Change-Id: Ic61c0a7f6b99520ef7ede60a0fdb5a3a8d3e6867
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>