test: make test-worker-esm-missing-main more robust

test-worker-esm-missing-main failed in CI recently in a way that
suggests that maybe the `does-not-exist.js` file did in fact exist.
Maybe that isn't what happened at all, but let's rule it out by changing
the use of `does-not-exist.js` from a file expected to be missing from
the current working directory to a file in the temp directory, which the
test will remove and recreate at the outset.

PR-URL: #27340
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>

test/parallel/test-worker-esm-missing-main.js

@@ -1,11 +1,14 @@
 'use strict';
 const common = require('../common');
 const assert = require('assert');
+const path = require('path');
 const { Worker } = require('worker_threads');
 
-const worker = new Worker('./does-not-exist.js', {
-  execArgv: ['--experimental-modules'],
-});
+const tmpdir = require('../common/tmpdir');
+tmpdir.refresh();
+const missing = path.join(tmpdir.path, 'does-not-exist.js');
+
+const worker = new Worker(missing, { execArgv: ['--experimental-modules'] });
 
 worker.on('error', common.mustCall((err) => {
   // eslint-disable-next-line node-core/no-unescaped-regexp-dot