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

[automerger skipped] Merge "Use FLAG_IMMUTABLE for CarrierKeyDownloadManager" into qt-qpr1-dev am: 792831b4 -s ours am: e866eed4 -s ours am: 64514c62 -s ours am: bde7910e -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/+/11480978

Change-Id: Ic24c083171dd6881d73368d9e63ee259de7c12dc