Merge "Preferred network mode transform to BitMask type." into rvc-dev am: 2fe809be am: 8e248af8 am: b937edc1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11696874

Change-Id: Idb7e878e22e40e9842c52723a3ea2c9eaac060b5