test: make test-querystring-escape engine 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: https://github.com/nodejs/node/pull/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-querystring-escape.js

@@ -28,12 +28,14 @@ assert.strictEqual(
   'test'
 );
 
-// toString is not callable, must throw an error
+// `toString` is not callable, must throw an error.
-assert.throws(() => qs.escape({ toString: 5 }),
+// Error message will vary between different JavaScript engines, so only check
-              /^TypeError: Cannot convert object to primitive value$/);
+// that it is a `TypeError`.
+assert.throws(() => qs.escape({ toString: 5 }), TypeError);
 
-// should use valueOf instead of non-callable toString
+// Should use valueOf instead of non-callable toString.
 assert.strictEqual(qs.escape({ toString: 5, valueOf: () => 'test' }), 'test');
 
-assert.throws(() => qs.escape(Symbol('test')),
+// Error message will vary between different JavaScript engines, so only check
-              /^TypeError: Cannot convert a Symbol value to a string$/);
+// that it is a `TypeError`.
+assert.throws(() => qs.escape(Symbol('test')), TypeError);