Custom Form, AJAX Submit

Hey,

I’m using your plugin successfully to validate admin & user login and registration forms. I also have a completely custom form that submits via AJAX. Using the plugin currently stops that form from from submitting with AJAX because the form is submitted with JS in this code:

callback: function (recaptchaToken) {
  if (null !== cf7SubmitElm && typeof jQuery != 'undefined') {
    jQuery(frm).submit();
    grecaptcha.reset(holderId);
    return;
  }
  HTMLFormElement.prototype.submit.call(frm);
}

From looking at the code and a few hours of experimenting, it looks like I can currently get this to work correctly, simply by adding the wpcf7-submit class to my submit button (which changes the behaviour of your JS).

However, since at some point this could cause some clash with a real wpcf7-submit button, it would be nice to have an option for setting a custom value for this class…. maybe somehow in the google_invre_render_widget_action filter?