[Addon] Grafana failed install Datasources

[victoronl]

So when we install this addon always pending on runningWorkflow phase.

Invoke the command:

vela addon enable grafana

Workflow logs:

Step:	Install Prometheus Datasources
Type:	install-datasource-from-config
First Execute Time:	2025-10-08T23:50:35Z
Last Execute Time:	2025-10-08T23:50:35Z
Duration:	0s
Phase:	failed
Message(Reason):	invalid cue task for evaluation: runtime error: invalid memory address or nil pointer dereference(Rendering)

Step:	Install Loki Datasources
Type:	install-datasource-from-config
First Execute Time:	2025-10-08T23:50:35Z
Last Execute Time:	2025-10-08T23:50:35Z
Duration:	0s
Phase:	failed
Message(Reason):	invalid cue task for evaluation: runtime error: invalid memory address or nil pointer dereference(Rendering)