Merge "Add a delay before turning the screen off" into stage-aosp-sc-ts-dev am: a1b832cd6e am: 9be28912a6

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/15686074

Change-Id: I158c573376b6acd30abc7a8839511d4b8cdfb732