Follow up on #4012

Expected behavior

That a "name" type which is annotated in their fully qualified form in a docblock, stays in that form when presented in the documentation.

Actual behavior

namespace Foo;
class Bar {
    /**
     * @param string|\Stringable $s
     */
    function baz($s) {}
}

... results in an argument list entry of:

    <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-argument-list__argument__name">$s</span>
                : <span class="phpdocumentor-argument-list__argument__type">string|<abbr title="\Foo\Stringable">Stringable</abbr></span>
                            </dt>

Take note of the fully qualified \Stringable from the docblock becoming \Foo\Stringable in the <abbr> tag.

Steps to reproduce the problem

Given the following code:

namespace WpOrg\Requests;

use WpOrg\Requests\Exception\InvalidArgument;
use WpOrg\Requests\Utility\InputValidator;

final class Ipv6 {
	/**
	 * Uncompresses an IPv6 address
	 *
	 * @param string|\Stringable $ip An IPv6 address
	 * @return string The uncompressed IPv6 address
	 *
	 * @throws \WpOrg\Requests\Exception\InvalidArgument When the passed argument is not a string or a stringable object.
	 */
	public static function uncompress($ip) {
		// Do something.
	}
}

Source: https://github.com/WordPress/Requests/blob/88e570f7381a4b580f1bf8a74b490ab0d25bb429/src/Ipv6.php#L40-L45

And generating the docs like so:
phpDocumentor

... with the following quite plain config: https://github.com/WordPress/Requests/blob/develop/phpdoc.dist.xml

With phpDocumentor 3.9.1, the output looks like so:

Live web link: https://requests.ryanmccue.info/api-2.x/classes/WpOrg-Requests-Ipv6.html#method_uncompress

Relevant example lines in committed generated docs:

• https://github.com/WordPress/Requests/blob/07b5ef970b07c921a406da6ba3d205f5fafe8af6/api-2.x/classes/WpOrg-Requests-Ipv6.html#L388
• https://github.com/WordPress/Requests/blob/07b5ef970b07c921a406da6ba3d205f5fafe8af6/api-2.x/classes/WpOrg-Requests-Ipv6.html#L404

I've tried to trace this back to a specific phpDocumentor version, but haven't been able to. Looks like this has been happening since we switched to phpDocumentor (3.x) four years ago.

Your environment

• Version used: 3.9.1
• Install method: in GitHub Actions via setup-php
• PHP version: 8.1
• Operating system and version: Ubuntu 24.04 (GHA)
• Link to your project: https://github.com/WordPress/Requests