Updated lists for merge request dashboard

What does this MR do and why?

Updates the lists and queries for the merge request dashboard

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

How to set up and validate locally

• Enable merge_request_dashboard feature flag
• Visit http://gdk.test:3000/dashboard/merge_requests