Returns the full EAN registry available to the company behind the bearer token.
Privacy is controlled by the tenant-level private_ean_registry feature flag:
The endpoint returns the full registry in a single response (no pagination).
A hard cap of 5000 records per response protects the server. If the registry
exceeds 5000 entries, only the first 5000 are returned and truncated is
set to true.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.