Moved the gear settings dropdown in the group view to a tab

What does this MR do?

Removes the gear settings dropdown to a tab inside the group view

Why was this MR needed?

To make the UX consistent across the project view and the group view

Screenshots (if relevant)

Before

After

Does this MR meet the acceptance criteria?

• Changelog entry added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

closes #23304 (closed)

EE Counterpart: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1409