test: ensure that the message event is fired

Use `common.mustCallAtLeast()` to verify that the `'message'` event is
fired.

PR-URL: #59952
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Jake Yuesong Li <[email protected]>

Author: lpinca

test/parallel/test-worker-message-port-infinite-message-loop.js

@@ -11,7 +11,7 @@ const { MessageChannel } = require('worker_threads');
 
 const { port1, port2 } = new MessageChannel();
 let count = 0;
-port1.on('message', () => {
+port1.on('message', common.mustCallAtLeast(() => {
   if (count === 0) {
     setTimeout(common.mustCall(() => {
       port1.close();
@@ -20,7 +20,7 @@ port1.on('message', () => {
 
   port2.postMessage(0);
   assert(count++ < 10000, `hit ${count} loop iterations`);
-});
+}));
 
 port2.postMessage(0);