[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: de443034 -s ours

am skip reason: Change-Id I223047644021a647bce72f229998487bee0c007b with SHA-1 0724f23c is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/11480978

Change-Id: I320b34bacf2ca9ae4dd5415d8813022983f9e16e