WS-649: send CARTA URL to workspaces system

The mock messaging system being inoperable, these mods can be "tested" only by running CARTA Envoy on dev, which I will do following merge.

apps/cli/executables/pexable/carta_envoy/carta_envoy/connect.py

@@ -309,13 +309,13 @@ class WorkflowConnect:
         self.settings = settings
         self.url = settings["workflow_url"]
 
-    def send_url_message(self):
+    def send_carta_url_to_rh(self, wrapper_url: str):
         """
         Makes REST call to send message containing CARTA URL to workspaces system
         :return:
         """
         send_url_message = f"{self.settings['workflow_url']}/workflows/carta/requests/{self.settings['wf_request_id']}/send-url-to-ws"
-        payload = {"carta_url": self.url}
+        payload = {"carta_url": wrapper_url}
         self.logger.info(
             "Sending REST call to workflow service for WS CARTA messaging."
         )