Merge "Use the splash screen background color as the fallback background color" into sc-dev am: 3616f29f83 am: 801dbf90c4 am: 43fa3f3634

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14881306

Change-Id: If5daca691bb54bacbf9b1250b09a5a2630a12ff6