fix k8s crd regression (#7728)

Signed-off-by: mclarke47 <matthewclarke47@gmail.com>

.changeset/eleven-brooms-add.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-kubernetes-backend': patch
+---
+
+Fix Kubernetes plugin custom objects lookup regression

plugins/kubernetes-backend/src/service/KubernetesBuilder.ts

@@ -124,6 +124,7 @@ export class KubernetesBuilder {
           group: c.getString('group'),
           apiVersion: c.getString('apiVersion'),
           plural: c.getString('plural'),
+          objectType: 'customresources',
         } as CustomResource),
     );
 

plugins/kubernetes-backend/src/service/KubernetesFetcher.ts

@@ -148,7 +148,10 @@ export class KubernetesClientBasedFetcher implements KubernetesFetcher {
         labelSelector,
       )
       .then(r => {
-        return { type: objectType, resources: (r.body as any).items };
+        return {
+          type: objectType,
+          resources: (r.body as any).items,
+        };
       });
   }
 }