[Darwin] MTRDevice NSCache followup issues

[bzbarsky-apple]

Reproduction steps

1. When we fail to read expected clusterData from storage, we should wipe out the storage and do a re-subscribe without any DataVersions, so that we get a new priming read to get us to a good state.
2. When clusters disappear (due to entries going away from PartsList or from ServerClusters), need to remove them from our in-memory and persistent storage.

Platform

darwin

Platform Version(s)

No response

Type

Manually tested with SDK

(Optional) If manually tested please explain why this is only manually tested

No response

Anything else?

No response