feature: Wire Cache-based Listers Into Tenancy Reconcilers

[stevekuznetsov]

Feature Description

We know that a number of the tenancy.kcp.dev reconcilers require global views of ClusterWorkspaceTypes and ClusterWorkspaces. We need to hard-code these types into the cache server & get cache-based listers and informers into these controllers.

Proposed Solution

Hard-coding the push of the types into the server is fine. We need to make sensible choices about handling NotFound errors with stale caches.

Alternative Solutions

No response

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Additional Context

No response

[sttts]

Followed-up by #2612