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

[automerger skipped] Use FLAG_IMMUTABLE for InstallCarrierAppUtils am: 76decc9e am: fa5672c8 am: 02a62071 -s ours am: 6b0c941f -s ours am: 2876a91d -s ours

am skip reason: Change-Id I8ac155bf53e33474e1fcdb2466743a1e05b92399 with SHA-1 76decc9e is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11493532

Change-Id: I6788f6a83553475c72e3bf4bf515a46558b00a31