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

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

Change-Id: I398936c17c9958a47f0ddf7f2c38529a6a032ede