add submitters order param

app/controllers/api/submissions_controller.rb

@@ -185,7 +185,7 @@ module Api
           message: %i[subject body],
           submitters: [[:send_email, :send_sms, :completed_redirect_url, :uuid, :name, :email, :role,
                         :completed, :phone, :application_key, :external_id, :reply_to, :go_to_last,
-                        :require_phone_2fa,
+                        :require_phone_2fa, :order,
                         { metadata: {}, values: {}, roles: [], readonly_fields: [], message: %i[subject body],
                           fields: [:name, :uuid, :default_value, :value, :title, :description,
                                    :readonly, :required, :validation_pattern, :invalid_message,