Add Ability to Remove groups at the parent group level

What does this MR do and why?

Fixes to #349863 (closed)

Screenshots or screen recordings

How to set up and validate locally

1. On the top bar, select Menu > Groups.
2. Admins & group owners should see the Delete button in group row dropdown

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.