Add operational vulnerability tab

What does this MR do and why?

Add operational vulnerability tab

• add new tab to show operational vulnerabilities

Screenshots or screen recordings

Before	After
Only Developement vulnerabilities tab

How to set up and validate locally

1. Upload a GitLab Ultimate license
2. Enable the :operational_vulnerabilities feature flag
3. Navigate to a project with security scans enabled
4. Navigate to Security & Compliance => Vulnerability Report and verify the page
5. Navigate to a group with security scans enabled
6. Navigate to Security & Compliance => Vulnerability Report and verify the page
7. Navigate to Menu => Security => Vulnerability Report and verify the page

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.

Related to #337869 (closed)