Merge "Update colors for Digital Wellbeing Toast." into sc-dev am: 3558f084f3 am: e8eccdb81c

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

Change-Id: I0b44fc041ce2e3c76e3c978eeb8d1a71e1422091