Customizable lock screen affordance entry-point. am: abda67b66e am: 8d5888d222

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/20601630

Change-Id: Ieba216227bc8111ecba2287f648bdaf73f859fc4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>