Merge "Conform the logic to decide wallpaper darkness" into udc-dev am: 4f7f216c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/23618530



Change-Id: Id22db11abb4d8e1aec40ff033cf9d02306ff6e80
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>