Revert example client initialization change

templates/vanilla/example/ui/index.html.hbs

@@ -45,8 +45,8 @@
       }
 
       async function connect() {
-        // We pass an unused string as the url because it will dynamically be replaced in launcher environments
-        client = await AppAgentWebsocket.connect(new URL('https://UNUSED'), 'hello-world');
+        // We pass '' as url because it will dynamically be replaced in launcher environments
+        client = await AppAgentWebsocket.connect('', 'hello-world');
         const canvas = document.getElementById('pubkey')
         pubkey.title = encodeHashToBase64(client.myPubKey)
         const opts = {