Merge "Update notification dot color" into udc-dev am: 21339533

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23170209



Change-Id: I732d7424db98e2f31a84d2696efce079f1e38bab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>