Simplify project payload exposed on Environment endpoints in V4 (!9675) · Merge requests · GitLab.org / GitLab FOSS · GitLab

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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)