url: improve isURL detection

PR-URL: nodejs/node#47886
Backport-PR-URL: nodejs/node#50105
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Matthew Aitken <maitken033380023@gmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

graal-nodejs/test/parallel/test-url-is-url.js

@@ -0,0 +1,11 @@
+// Flags: --expose-internals
+'use strict';
+
+require('../common');
+
+const { URL, parse } = require('url');
+const assert = require('assert');
+const { isURL } = require('internal/url');
+
+assert.strictEqual(isURL(new URL('https://www.nodejs.org')), true);
+assert.strictEqual(isURL(parse('https://www.nodejs.org')), false);