[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: adf351e3 am: b82eff35 am: fbabef09 -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: I6675ae7cd33953a14a17398f75117bf709654bc4