Merge "Revert "Revert "Release PREVENT_BYPASS_KEYGUARD flag""" into udc-dev am: 9e670f52

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22560146



Change-Id: I74f102e766300cb476033c7f2351812a05c64508
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>