Fix failed to enable workspace network isolation

Created by: wansir

Signed-off-by: hongming hongming@kubesphere.io

fix: https://github.com/kubesphere/kubesphere/issues/4147

                    clusterOverrides:
                      items:
                        properties:
                          op:
                            pattern: ^(add|remove|replace)?$
                            type: string
                          path:
                            type: string
                          value:
                            type: object
                            x-kubernetes-preserve-unknown-fields: true

type: object restricts the type of value, but it can actually be an integer, boolean, object, array, etc.