test: use tmpdir.refresh() in test-esm-windows.js

Use `tmpdir.refresh()` in `test/es-module/test-esm-windows.js` so
that the temporary directory is cleaned before use and when the test
exits.

PR-URL: #30997
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/es-module/test-esm-windows.js

@@ -15,9 +15,8 @@ const imp = (file) => {
 };
 
 (async () => {
-  const tmp = tmpdir.path;
-  await fs.mkdir(tmp).catch(() => {});
-  const rel = (file) => path.join(tmp, file);
+  tmpdir.refresh();
+  const rel = (file) => path.join(tmpdir.path, file);
 
   { // Load a single script
     const file = rel('con.mjs');