Merge "Merge "rename "Emergency Alert" to "Public Warning" per IT...

Merge "Merge "rename "Emergency Alert" to "Public Warning" per IT requirements" into rvc-dev am: 6ebe9ae0 am: 34a3ec22 am: 8db9c072" into rvc-qpr-dev-plus-aosp am: 56aed228

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/11814763

Change-Id: I6c8cef4ac40a631a3579d513a2986a37700c0e7a