Do not always send not registered when querying IMS reg state am: 039dec8c am: 60b11592 am: 016066d0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/15262833

Change-Id: I4c3b033f08a6ac74335269121b9f6f6383ea07fb