Merge "Update colors for Digital Wellbeing Toast." into sc-dev am: 3558f084f3 am: 3c8f1056fd am: ced533bba0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14737897

Change-Id: I9294d475bc86e0f729d8331b08a2605d7cb2490d