fix for k8s gateway api init

Signed-off-by: yutao04 <[email protected]>

Author: trickMin

hango-api-plane-server/src/main/java/org/hango/cloud/cache/K8sResourceCache.java

@@ -80,6 +80,10 @@ private <T extends HasMetadata, L extends KubernetesResourceList<T>> void regist
             log.error("get crd definition error", e);
             return;
         }
+        if (crd == null) {
+            log.error("CRD is null, kind: {}", kind.name());
+            return;
+        }
         CustomResourceDefinitionContext customResourceDefinitionContext = CustomResourceDefinitionContext.fromCrd(crd);
         Indexer<T> indexer = sharedInformerFactory.sharedIndexInformerForCustomResource(
                 customResourceDefinitionContext,