[automerger skipped] Merge "Use PendingIntent.FLAG_IMMUTABLE in PendingIntent in NotificationMgr" into qt-qpr1-dev am: 8bb4d976f7 -s ours am: e4a7758cf8 -s ours

am skip reason: Change-Id Ib278926f4327b3fcbec25795b78643774911d1dc with SHA-1 b722e6d0be is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/11345541

Change-Id: I5f74ff733e596c6d31f6446cedef608472349144