Merge pull request #2718 from overleaf/jpa-custom-wsurl-for-beta-users

[frontend] ConnectionManager: fix dumb string concat in socket.io v0

GitOrigin-RevId: a1c472623e07b020e498d621e9f3241f8afc44f6

services/web/frontend/js/ide/connection/ConnectionManager.js

@@ -105,7 +105,7 @@ define([], function() {
         this.ide.socket = io.connect(
           parsedURL.origin,
           {
-            resource: parsedURL.pathname,
+            resource: parsedURL.pathname.slice(1),
             reconnect: false,
             'connect timeout': 30 * 1000,
             'force new connection': true