Update badge in accessibility issue body

What does this MR do and why?

Describe in detail what your merge request does and why.

A small MVC for: #344302 (closed) where we make badges in app/assets/javascripts/reports/accessibility_report/components/accessibility_issue_body.vue Pajamas-compliant.

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Enable GDK local merge widget
2. Set up local accessibility report scanning:

• #39425 (closed)
• https://docs.gitlab.com/ee/user/project/merge_requests/accessibility_testing.html

1. Create a merge with accessibility issues
2. Confirm "New" Badge

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.