Deprecations cause phpstan errors

Problem

Gitlab CI fails with php stan errors.

Proposed resolution

AI generated solution:

PHPStan Errors (2 errors)

Lines 293 & 299 in RestMenuItemsResource.php:
Call to deprecated method get() of class Symfony\Component\HttpFoundation\Request:
since Symfony 7.4, use properties `->attributes`, `query` or `request` directly instead

This is in the setup() method:
$request = \Drupal::request();
$max = $request->get('max_depth'); // Line 293 - deprecated
$min = $request->get('min_depth'); // Line 299 - deprecated

Fix Required

Change from:
$request->get('max_depth')
$request->get('min_depth')

To:
$request->query->get('max_depth')
$request->query->get('min_depth')