Merge "Remove scrim from navigation bar from full widget picker." into sc-dev am: 57cdcceb07 am: b4692ada93 am: 8b3230690e

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

Change-Id: I0f0f5f2c10e8a15f29c1e99defec77671c96cd9c