ref(do_external_connect): do not use jiconop if websocket is enabled

connection_optimization/do_external_connect.js

 
 if (typeof createConnectionExternally === 'function') {
     // URL params have higher priority than config params.
+    // Do not use external connect if websocket is enabled.
     let url
         = parseURLParams(window.location, true, 'hash')[
                 'config.externalConnectUrl']
-            || config.externalConnectUrl;
+            || config.websocket ? undefined : config.externalConnectUrl;
     const isRecorder
         = parseURLParams(window.location, true, 'hash')['config.iAmRecorder'];