List Current Org Shared Connections
Lists shared copies of a connection that the caller's organization owns.
The returned connections are the child copies, not the parent connection
itself. This is useful when a partner workflow needs to confirm which
downstream organizations have already received a shared copy.
Creating a new shared copy is a separate operation. Use
[`POST /api/organizations/{org_id}/connections/{connection_id}/share`](./create-shared-connection)
for the v5 partner-scoped flow.
