CHW-5511 AdminOrgListFailed

unable to list organisations; retry shortly and contact support if the failure persists

Default message: unable to list organisations; retry shortly and contact support if the failure persists
HTTP status: 500 (server)

Problem. /api/admin/orgs returned 500. Cause. The org + plan-assignment + limits join query failed at the DB layer. Fix. Retry; the cause is logged. The admin usage page cannot render its rollup until this clears. HTTP 500.