Add choice_label support to CrudAutocompleteType

[Amoifr]

Summary

When using EntityFilter with ->autocomplete() and a custom choice_label, the form crashed with:

The option "choice_label" does not exist.

Root cause: CrudAutocompleteType did not define choice_label as a valid option.

Changes:

• Add choice_label option to CrudAutocompleteType (supports null, string, callable, bool)
• Update CrudAutocompleteSubscriber to preserve user-defined choice_label instead of overwriting it

Usage example:

public function configureFilters(Filters $filters): Filters
{
    return $filters
        ->add(EntityFilter::new('plan')
            ->autocomplete()
            ->setFormTypeOption('value_type_options', [
                'choice_label' => static function (Plan $plan) {
                    return $plan->name . ' [' . $plan->project->getName() . ']';
                },
            ])
        );
}

Test plan

• Manual testing with EntityFilter + autocomplete + custom choice_label

Fix #7462