Changing submit button to pajamas

What does this MR do and why?

As part the latest pajamas migration day I'm migrating this UI component to Pajamas framework.

Screenshots or screen recordings

It's tricky to see the changed partial in a GDK. The following patch is a quick hack to render it at http://gdk.test:3000/ui_review:

ui_review.patch

Before	After

How to set up and validate locally

• Apply the patch ☝
• See http://gdk.test:3000/ui_review

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.