CSV export: relation columns should export the related record's name, not only its id

(from Val's Claude) Feature request When exporting a view to CSV, columns of type RELATION currently export the related record's id (e.g. studentId: f7de0f2a-ee6b-4dfd-bdff-1513426db31f). In the table UI the same column renders the related record's label as a chip ("Jane Doe"), so the export is a downgrade from what the operator sees: a spreadsheet full of UUIDs that mean nothing to the people the export is usually for (management, teachers, external partners). Proposal: export the related record's label-identifier value (its name) for relation columns — either instead of the id, or as an additional column next to it (Student = "Jane Doe", Student Id = uuid) so programmatic round-trips keep working. This would also pair naturally with #14693 (importing relations by name), making name-based CSV round-trips symmetric. Current workaround: we maintain read-only TEXT "projection" fields (e.g. ownerNameProjection) on each object, synced …