Merge "Improve the documentation for UnlockedDeviceRequired" into main am: 9fe168541c am: 3792747434

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3001500

Change-Id: I9de40b06b37d73e6a5ac83e3478412653a6699ef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>