change RegisterForm for javascript

See Zammad Ticket#7320142

Use jsvascript instead of embeded form Replace

<form method="post" className={styles.joinForm} action="https://systeme.io/embedded/6382760/subscription">
              <label htmlFor="name"> Prénom: </label>
              <input type="text" name="first_name" required="required" />
              <label htmlFor="email"> Adresse email: </label>
              <input type="email" name="email" required="required" />
              <div className="f-row">
                  <button className="button button--primary" type="submit">Je rejoins le mouvement !</button>
              </div>
            </form>

by

<script id="form-script-tag-4443422" src="https://sio.compagnons-devops.fr/public/remote/page/6382760ba13a84e25c7c570616dd6e6dbf42b5a.js"></script>

Source SIO funnel