Merge "Update screensaver preference summary when on." into tm-qpr-dev am: 7bae5625

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/20683706



Change-Id: Ie01d33707536f511f144d82fc13b2d02f2825941
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>