[automerger skipped] Merge "Use FLAG_IMMUTABLE for CarrierKeyDownloadManager"...

[automerger skipped] Merge "Use FLAG_IMMUTABLE for CarrierKeyDownloadManager" into oc-mr1-dev am: 8b14c887 -s ours am: ad152120 -s ours am: be984ba7 -s ours

am skip reason: Change-Id I223047644021a647bce72f229998487bee0c007b with SHA-1 57fc1fb9 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11480992

Change-Id: Ib7425c5d00487d7dcc99e143a0ef1db8a68774e6