Show "edit" action when user selecting an image wallpaper. am: 7dc2157657 am: a53b39e42c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/11587875

Change-Id: Iae6da2d212321a53d7526f6b6ca0ce81ccdae7f2