Merge "Remove scrim from navigation bar from full widget picker." into sc-dev am: 57cdcceb07 am: b4692ada93

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

Change-Id: I9bfe3dff6598606bdc85b02636f048955ecc6855