Symfony version(s) affected: 4.4

Description
This probably was introduced in #30301. Links in CLI is a great thing by it should fail gracefully when not supported.

How to reproduce
Run the following script in Gnome Terminal 3.6.2.

<?php

use Symfony\Component\VarDumper\VarDumper;

require __DIR__ . '/vendor/autoload.php';

class Foo {}
VarDumper::dump(new Foo());

The output would be like follows:

Possible Solution
Render links only if user terminal supports it.