Set enhavo.newsletter.form_resolver service public (#866)
Set enhavo.newsletter.form_resolver service public (#866)

* fix enhavo newsletter-bundle subscriber->addGroup

* set enhavo.newsletter.form_resolver service public

Co-authored-by: Philipp Sester <b276ee721103bf6d7578d822f8cac848d3e538bc@xq-web.de>
enhavo/EnhavoNewsletterBundle