Merge "Prevent an app to check if the specified VPN app is set VPN always-on" into sc-dev am: 34137fbbff am: 4718cfc880

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15501962

Change-Id: I7fc00bc5538907af452f661576fa19b8e4470f7a