WIP: Resolve "Register - align captcha with form"

• update gem
• fix setting rename breaking change
• style button
• add callback script
• loading state for form submit
• check note captcha styles

What does this MR do?

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Fixes UI Issue - visible recaptcha isn't full width

Screenshots (if relevant)

Antispam captchas same as before:

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• [ ] Documentation created/updated
• [ ] API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #29000 (closed)