fix: FactoriesCache undefined method Config\DocTypes::__set_state

[ddevsr]

Description
See #7859 (Comment).

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[MGatner]

@kenjis seemed to be proposing an alternate fix:

If it is possible, I would like to use new DocTypes().

[paulbalandan]

I would also like new DocTypes. In our unreleased (yet) phpstan extension, config(DocTypes::class) would be flagged.

[kenjis]

<?php

namespace App\Controllers;

use Config\DocTypes;

class Home extends BaseController
{
    public function index(): string
    {
        $iterator = new \CodeIgniter\Debug\Iterator();

        $iterator->add('config()', static function () {
            $config = config(DocTypes::class);
        });
        $iterator->add('new', static function () {
            $config = new DocTypes();
        });

        return $iterator->run(300000);
    }
}

Test	Time	Memory
config()	0.2692	0 Bytes
new	0.0278	0 Bytes

$ php -v
PHP 8.1.2-1ubuntu2.13 (cli) (built: Jun 28 2023 14:01:49) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.2, Copyright (c) Zend Technologies
    with Zend OPcache v8.1.2-1ubuntu2.13, Copyright (c), by Zend Technologies

[kenjis]

@ddevsr Do you really need to share the instance with Factories?

[kenjis]

@ddevsr Can you try #7872 ?

[ddevsr]

@kenjis I have tried, same result undefined method Config\DocTypes::__set_state

[kenjis]

@ddevsr Please clear the cache.

[ddevsr]

@kenjis Oh, sorry. I can confirm works