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: e5c24841" into rvc-d1-dev-plus-aosp am: 50d595d4 am: ee850698

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

Change-Id: Id529a43ef40176deb7a36bd30f8f7842e67c7e53