Insurance — Personal injury protection — Coverage — Emergency medical condition — Healthcare providers, as assignees of insureds’ personal injury protection benefits, filed state court action alleging automobile insurance company’s practice of relying on negative emergency medical condition determinations from non-treating healthcare providers to limit coverage to $2,500 violates Florida Motor Vehicle No — Fault Act which allows only treating providers to make negative EMC determinations — Insurer filed interlocutory appeal after removal and district court granted providers’ motion to certify injunction class, but denied their motion to certify damages class