API level 30 upgrade: AOSP WallpaperPicker am: 5057292d15 am: d39dc6b8ca

Original change: https://android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker/+/1782087

Change-Id: If8932a1e8c47e974434ed14b40d61040b1cabbc0