Upload form file field can't be optionnal

[damsfx]

When using the filepondForm component, if no file is added to the FilePond upload field, the ajax handler failed and the form is then send the standard way with a POST request.
If a file is added, all work's fine.

[willouch]

+1

[willouch]

I'm not sure but if I modify

wn-magicforms-plugin/components/filepondform/default.htm

Line 9 in ac15e72

{{ form_ajax(__SELF__ ~ '::onFormSubmit', { id: __SELF__ }) }}

In {{ form_ajax(__SELF__ ~ '::onFormSubmit', { id: __SELF__, 'data-request-files': 'true' }) }}

it seems to work????