test: fix test-heapdump-worker

This test was broken by d35af56.

Refs: #21283
Fixes: #26712

PR-URL: #26713
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

test/pummel/test-heapdump-worker.js

@@ -9,7 +9,6 @@ const worker = new Worker('setInterval(() => {}, 100);', { eval: true });
 validateSnapshotNodes('Node / Worker', [
   {
     children: [
-      { node_name: 'Node / AsyncRequest', edge_name: 'thread_stopper_' },
       { node_name: 'Node / AsyncRequest', edge_name: 'on_thread_finished_' },
       { node_name: 'Node / MessagePort', edge_name: 'parent_port' },
       { node_name: 'Worker', edge_name: 'wrapped' }