Handle the carrier configs change event am: be98b84f1b am: 060baaea26 am: 1d66e4a9af

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ImsServiceEntitlement/+/14730578

Change-Id: Iaa5dfa7736aeb560db3bf0f2d262835a4a5e0938