Checkbox in FileType have required true as default

[Asyjjan]

Hi, when trying to upload a file I noticed that if we render the form with a FileType in, we can't submit until we checked the delete checkbox button so we can't submit

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('file', FileType::class, [
                'label'        => false,
                'file_path'    => 'image', // Required, see Options
                'allow_delete' => true,
                'file_label'   => 'Fichier',
            ])
            ->add('submit', SubmitType::class, [
                'label' => 'Envoyer'
            ])
        ;
    }

{% block body %}
    {{ form(form) }}
{% endblock %}

We get a checkbox like this :

<input type="checkbox" id="image_form_file_delete" name="image_form[file][delete]" required="required" class="form-check-input" value="1">

[jmsche]

Fixed by using Leapt's form theme.