Fix broken path resolution when Drupal bootstrapped outside app root

Hi.
I think, we need see template loaders.
Please see https://git.drupalcode.org/project/drupal/-/blob/11.x/core/lib/Drupal/Co...

Relative paths and i get errors in my reactPHP app;
```
Uncaught PHP Exception Twig\Error\LoaderError: "Template "core/modules/views/templates/views-view.html.twig" is not defined." at /var/www/html/vendor/twig/twig/src/Loader/ChainLoader.php line 99
```

After search problem. I change script run dir. See https://github.com/batkor/react-drupal/blob/main/src/App.php#L59

This feels at least related to this issue I found today: 🐛 Calling chdir() causes plugin discovery to fail Needs review