[automerger skipped] Merge "Add FLAG_IMMUTABLE to PendingIntent in...

[automerger skipped] Merge "Add FLAG_IMMUTABLE to PendingIntent in LegacyModeSmsHandler." into pi-dev am: 44b02956 am: 06572a08 am: 5625595e am: 0642423c am: a6351932 am: 7495bd62 am: 120cddb2 am: fc293767 am: 904ac44c -s ours

am skip reason: Merged-In I1024353434674f8e4bf164c3a6c1e16924dfaa8f with SHA-1 54dc4e87 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Dialer/+/16199731

Change-Id: Ie9d425c74882a8be58aee2908bdd948a90fc3043