This is a clone of issue OCPBUGS-55683. The following is the description of the original issue:
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When using the OVE UI there is a button to download the kubeconfig credentials. This invokes the api/assisted-install/v2/clusters/<cluster_id>/download/files endpoint which will cause the kubeconfig credentials to be generated and allow them to be downloaded. The endpoint calls generateClusterInstallConfig().

The problem is that when the cluster is later installed, a call to generateClusterInstallConfig() which will regenerate a new kubeadmin-password so that the original password which was downloaded is no longer valid. This is not an issue with the kubeconfig since its value will not change.

We need to ensure that the kubeadmin-password downloaded via the Download button remains valid.