Allow user to see releases associated to a group milestone in the Milestone detail page

Problem to solve

Project milestones and tags support being connected to Releases. Today users can only associate milestone to releases at the project level. To make sure the right information is accessible from different product areas, we want users to be able to see the releases associated to a group milestone in the Milestone detail page.

Intended users

User experience goal

User should see and be able to interact with releases associated to a group milestone in the Milestone detail page.

Proposal

User story

As a user, I want to see which releases are associated to my group milestone, so that I can have quick access to important details and assets of each individual release.

Acceptance criteria

Users should be able to add group milestones to releases as per #121476 (closed)
In the Group Milestone detail view page, user should see when a release is associated to a group milestone.
In the right sidebar of the Group Milestone detail view page, a new section for Release should be added.
When a release is associated to a group milestone, the name of the release should be displayed (e.g. Release 3.0. The text should link to the Release detail view.
When no releases are associated to a group milestone, the UI Text should read: None.

Further details

Depends on the implementation of #121476 (closed)

Permissions and Security

Documentation

Yes, this feature requires updates to the Releases and Milestones documentation pages.

Availability & Testing

What does success look like, and how can we measure that?

What is the type of buyer?

Is this a cross-stage feature?

Yes, milestones is a capability that falls under devopsplan ~"Category:Project Management".