fix: panic on missing clusterconnect condition + mark unkown connection as false after controlplane provisioning

[jokuniew]

Description

Please include a summary of the changes and the related issue. List any dependencies that are required for this change.

Fixes:

• If someone updates infraprovider without ccg update - it'll hit panic: runtime error: invalid memory address or nil pointer dereference due to missing condition in clusterconnect object
• if someone updates successfully ccg and intelinfraProvider and their cluster already has lost connection - it'll stay in "Unknown" condition status. So I added if controlplane is provisioned - mark clusterConnect's unknown statuses as Error

Any Newly Introduced Dependencies

None.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

Checklist:

• I agree to use the APACHE-2.0 license for my code changes
• I have not introduced any 3rd party dependency changes
• I have performed a self-review of my code