Merge "Fix issue where disconnect cause notification does not fire." into...

Merge "Fix issue where disconnect cause notification does not fire." into rvc-dev am: 73e9d62d am: 31d788a7 am: cac66112 am: 67e41727

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11762949

Change-Id: I195eaafd422261d7ac475658c4390f8efe06dffc