Merge "KeyguardManager: clarify behavior for profile with separate challenge" into main am: aea7009e41 am: d0869578ea am: d279995264

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2850163

Change-Id: I0f1f401615cd0d1d88dcd82b81bdcdb4a1739840
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>