test: add test for async disposable worker thread

Signed-off-by: James M Snell <[email protected]>

Author: jasnell

test/parallel/test-worker-dispose.mjs

@@ -0,0 +1,7 @@
+import * as common from '../common/index.mjs';
+import { Worker } from 'node:worker_threads';
+
+// Verifies that the worker is async disposable
+await using worker = new Worker('for(;;) {}', { eval: true });
+worker.on('exit', common.mustCall());
+worker[Symbol.dispose]();