Merge "Use widget picker color surface for WidgetsBottomSheet" into sc-dev am: 99d4010c6e am: 400a4e8cd0 am: f1cd6f0eed

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14339830

Change-Id: I427b9e58101404c3e578d5b8be9dca47e334cc54