Simplify project payload exposed on Environment endpoints in V4
Use BasicProjectDetails grape entity in order to lean environment endpoints payloads.
Does this MR meet the acceptance criteria?
- Changelog entry added
- Documentation created/updated
- API support 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?
Backport gitlab-ee!1345
Closes #28598 (closed)