test: use common.mustCall() for skip empty string test

Author: VaishnavIUpadyaya

test/parallel/test-runner-skip-empty-string.js

@@ -1,15 +1,6 @@
 'use strict';
-require('../common');
 
+const common = require('../common');
 const { test } = require('node:test');
-const assert = require('assert');
 
-let ran = false;
-
-test('skip option empty string should not skip', { skip: '' }, () => {
-  ran = true;
-});
-
-process.on('exit', () => {
-  assert.ok(ran);
-});
+test('skip option empty string should not skip', { skip: '' }, common.mustCall());