Merge "Add animated background to the suw all set page." into sc-v2-dev am: 010faef3a5 am: 61795cd45a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16223698

Change-Id: I779e296c97cc6a6370fb3925a471f4392c058a40