Changing form button to Pajamas compliance

What does this MR do and why?

Changing form button to pajamas compliance for our Pajamas Migration Day

Important based on these instructions I should had changed the form to gitlab_ui_form_for, however when I did this I noticed that the button form is lost.

Screenshots or screen recordings

Confirmation that changing to pajamas button kept the same form factor for the button

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

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.