[automerger skipped] Use FLAG_IMMUTABLE for CarrierServiceStateTracker am:...

[automerger skipped] Use FLAG_IMMUTABLE for CarrierServiceStateTracker am: 89763569 am: 22d451db am: 6a5959d5 am: c60e0900 -s ours am: 3c4be1a3 -s ours

am skip reason: Change-Id Iea9ec6451170e592dc72c035d6eec7b80150ddd4 with SHA-1 17222327 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11448799

Change-Id: I1d2d4e960c5668b17e0cdc34f95a8032dde47e3e