test: make test-process-env-symbols agnostic

Do not check the error message if it is generated by the JavaScript
engine (V8, ChakraCore, etc.). Do confirm that it is a `TypeError`.

PR-URL: #16272
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

test/parallel/test-process-env-symbols.js

@@ -3,20 +3,23 @@ require('../common');
 
 const assert = require('assert');
 const symbol = Symbol('sym');
-const errRegExp = /^TypeError: Cannot convert a Symbol value to a string$/;
 
 // Verify that getting via a symbol key returns undefined.
 assert.strictEqual(process.env[symbol], undefined);
 
 // Verify that assigning via a symbol key throws.
+// The message depends on the JavaScript engine and so will be different between
+// different JavaScript engines. Confirm that the `Error` is a `TypeError` only.
 assert.throws(() => {
   process.env[symbol] = 42;
-}, errRegExp);
+}, TypeError);
 
 // Verify that assigning a symbol value throws.
+// The message depends on the JavaScript engine and so will be different between
+// different JavaScript engines. Confirm that the `Error` is a `TypeError` only.
 assert.throws(() => {
   process.env.foo = symbol;
-}, errRegExp);
+}, TypeError);
 
 // Verify that using a symbol with the in operator returns false.
 assert.strictEqual(symbol in process.env, false);