chore: Regenerate us-states.proto to no longer reference removed meth…

…ods (googleapis#2068)

* chore: Regenerate us-states.proto to no longer reference removed methods

* chore: Fix formatting for StateProto.java

* chore: Change protobuf for StateProto.java version to 3.25.3

* chore: Reformat StateProto.java

* chore: Regenerate us-states.proto with protobuf v27.4

* chore: Revert StateProto generation to use protobuf v25.4