The env KUBEVELA_DEFINITION_NAMESPACE did not worked on editing definition

[tossmilestone]

Describe the bug

The env KUBEVELA_DEFINITION_NAMESPACE did not worked on editing definition, the detail page of definition return the error "defintion not exist".

To Reproduce

1. Add env KUBEVELA_DEFINITION_NAMESPACE=kube-public to the deployment of velaux.
2. Deploy the definition resources in the kube-public namespace.
3. Open theDefinitions page, click one of the defintion in the list of definitons.

Expected behavior

The detail page of defintion should work well if env KUBEVELA_DEFINITION_NAMESPACE was set to other namespace.

Screenshots

KubeVela Version
v1.5.8

Additional context

[chivalryq]

This environment is not supported by VelaUX APIserver for now.