List MembershipTypes in display order

Returns a lightweight { id, name } summary of every MembershipType in the caller's organisation, sorted by the organisation-wide display order (the order column on the type), then by creation time as a tiebreak.

Use this to power UIs that need to render the type list in the operator-chosen order — typically the drag-to-reorder admin screen or any storefront component that picks the "first" type to feature. For the full MembershipType payload (with rates and metadata), use listMembershipTypes instead.