Cluster pickers listed every visible cluster, which includes clusters
shared with all authenticated users (e.g. the default org's "shared with
everyone" clusters). A member of a custom org could then pick another
org's cluster for a model deployment or a new worker.
Request only the current org's own clusters (mine=true) for:
- the model deploy picker (models page),
- the deploy-from-model-file picker (model files page), and
- the add-worker picker.
These resources are owner-scoped on the backend, so the model list and
the worker table (including its cluster-name column) only reference
own-org clusters. The add-model-file worker cascader is already own-org
via the owner-scoped worker list. Platform admin in the "All" view
bypasses mine and is scoped instead by the org picker.
