test: run ESM tests in parallel

PR-URL: #21919
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: targos

test/common/index.mjs

@@ -3,7 +3,6 @@
 import common from './index.js';
 
 const {
-  PORT,
   isMainThread,
   isWindows,
   isWOW64,
@@ -63,7 +62,6 @@ const {
 } = common;
 
 export {
-  PORT,
   isMainThread,
   isWindows,
   isWOW64,

test/es-module/testcfg.py

@@ -3,4 +3,4 @@
 import testpy
 
 def GetConfiguration(context, root):
-  return testpy.SimpleTestConfiguration(context, root, 'es-module')
+  return testpy.ParallelTestConfiguration(context, root, 'es-module')