Resolve "Link from build page to its pipeline"

What does this MR do?

Adds references and links to a build's pipeline within both individual build pages and the build index.

Are there points in the code the reviewer needs to double check?

Nothing springs to mind

Why was this MR needed?

See #22307 (closed)

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Tests
  • 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 #22307 (closed)