[Feature] [KubeRay Dashboard] hidden the grafana dashboard if link is not provided

[CheyuWu]

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• I had searched in the issues and found no similar feature requirement.

Description

Spec

In the KubeRay Dashboard, the Grafana icon in the cluster table currently has no functionality if the Grafana link is not configured. This may confuse users since the icon appears clickable but leads nowhere.

Expected Behavior

• If the Grafana link is not provided, the Grafana icon should be hidden from the dashboard table.

• If the Grafana link is configured, the icon should remain visible and functional.

Use case

This ensures a cleaner UI and avoids misleading users when monitoring integrations like Grafana are not set up.

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!