Selecting 'Dutch' as fallback language causes the Recaptcha to break the form

[VdVChiel]

Description (screenshots, logs, ...)

In my example I had Dutch selected as fallback language in the Sprout forms Recaptcha settings.
This caused 2 bugs:

• The recaptcha did not show up in the form (no console error either)
• The form no longer submits properly

It's possible other languages cause this bug as well, I only checked with Dutch. Setting it to English (US) fixes the issue

Steps to reproduce

1. In the Recaptcha settings set the fallback language to Dutch
2. Open the form in the front end and submit.

Additional info

• Craft version: 3.5.17.1
• Plugins & versions: Google reCAPTCHA for Sprout Forms 1.4.0, Sprout Forms 3.13.1