Merge "Remove scrim from navigation bar from full widget picker." into sc-dev am: 57cdcceb07 am: de30ace4db

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15095782

Change-Id: Ie0752fa2e27dbf78e5ae5477a13dc1bcf91a9fb0