Merge "Use widget picker color surface for WidgetsBottomSheet" into sc-dev am: 99d4010c6e am: 2ddfb8f8a6

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

Change-Id: Ia397cd2674d5ea9819cb140222b551a9a42e352e