Fix errorprone warnings that should be errors am: cb215867da

Original change: https://android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/2254807

Change-Id: I76abf6888dca9e9875f1ab223706343df6a9cc9e
Signed-off-by: Automerger Merge Worker <[email protected]>