Merge "Improve documentation for unlockUserKeyIfUnsecured()" into main am: c410ea7aab am: aa4b1fc976 am: e444c0ec0d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2796606

Change-Id: I063638a2a4c7856e29c475aa163faca7e91bc198
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>