fix: set controlPlaneInitialized when available

[makkes]

This commit fixes that field never being set to "true" when the
respective condition is "true", eventually leading to the UI always
marking it with a red indicator.

[yiannistri]

🥇

[foot]

I wonder if the controlPlaneInitialized field should even be part of that list to begin with because the other two are part of Cluster.Status field while controlPlaneInitialized is a condition.

This is a great point. Though its a minimal diff in this case, I think it's a nice guideline to expose the properties of cluster objects as they are in the UI as much as possible. E.g. there might be some confusion comparing the UI output to kubectl get cluster -oyaml and realising the Statuses don't align.

[foot]

Nice one! Very happy to merge as is for now, its strange that its isn't in the status anyway 🤷 , maybe it will appear there one day.