Merge "Improve documentation for KeyguardManager" into main am: 9da4fbd52e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2747678

Change-Id: I1f18df87ee67edeb871a1a23c4aa9517ee85438c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>