Merge "Adjust set wallpaper buttons container" into udc-dev am: 0346146375

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/23573098

Change-Id: I8fcbb2cb8b4eeb5a00ba08318a3139395a1474de
Signed-off-by: Automerger Merge Worker <[email protected]>