refactor: allow transportOptions to override all other options

Related: socketio/socket.io#4719

Author: darrachequesne

lib/socket.ts

@@ -418,15 +418,15 @@ export class Socket extends Emitter<
 
     const opts = Object.assign(
       {},
-      this.opts.transportOptions[name],
       this.opts,
       {
         query,
         socket: this,
         hostname: this.hostname,
         secure: this.secure,
         port: this.port,
-      }
+      },
+      this.opts.transportOptions[name]
     );
 
     debug("options: %j", opts);