Merge "Accept XML configuration doc only" into sc-dev am: a14a2ece8e am: 70eef11aac

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ImsServiceEntitlement/+/14702329

Change-Id: I4d9e632953e47f9639a6aacd7e61ea77b356a2b2