✨ Surface aggregated machine versions in status

[miltalex]

What this PR does / why we need it:

• Introduces status.versions (aggregated Kubernetes version + replica counts) across core APIs: Cluster control plane/workers, MachineSet, MachineDeployment, MachinePool, and
  KubeadmControlPlane.
• Add a shared version aggregation helper and use it in controllers to report versions from machine kubelet versions.
• Updates topology upgrade checks to use status.versions when available, reducing the need to list machines/nodes for simple version drift detection.
• Adds tests covering aggregation, controller status updates, and upgrade-check behavior.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #13303

P.S: I have tested the above changes locally using the docker provider. For example during upgrade

  Control Plane:
    Available Replicas:   0
    Desired Replicas:     3
    Ready Replicas:       0
    Replicas:             4
    Up To Date Replicas:  1
    Versions:
      Replicas:  3
      Version:   v1.34.3
      Replicas:  1
      Version:   v1.35.1

Control Plane:
   Available Replicas:   0
   Desired Replicas:     3
   Ready Replicas:       0
   Replicas:             4
   Up To Date Replicas:  2
   Versions:
     Replicas:  2
     Version:   v1.34.3
     Replicas:  1
     Version:   v1.35.1

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[k8s-ci-robot]

Hi @miltalex. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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