[automerger skipped] Merge "Use FLAG_IMMUTABLE" into qt-qpr1-dev am:...

[automerger skipped] Merge "Use FLAG_IMMUTABLE" into qt-qpr1-dev am: 7a87f63a -s ours am: 0485a8af -s ours am: 01c18a92 -s ours am: d2b05286 -s ours am: 5c600d31 -s ours

am skip reason: Change-Id If127b73c975b5b3f004500de7f9baa6a7bc00ce4 with SHA-1 7e9eb5fb is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11402660

Change-Id: Ia3c3252896eaeeebbe6729ad3cbf8660971ef04b