The route was gated on ``canSeeAdmin`` so only platform admins ever
saw Storage Types in the sidebar. But the backend route
(``gpu_instance_persistent_volume_types``) is tenant-scoped — Org
owners can create / list their own — so hiding the menu from them
left an admin-defined feature reachable only by URL.
Relax to ``canSeeOrgAdmin`` to match. OSS keeps the platform-admin-only
behaviour (predicate defaults to ``isPlatformAdmin``); the enterprise
access extension widens it to the current-org owner.
