fix: Use DeletionHandlingMetaNamespaceKeyFunc in cron controller (arg…

…oproj#4379)

Signed-off-by: Simon Behar <[email protected]>

workflow/cron/controller.go

@@ -283,7 +283,7 @@ func (cc *Controller) addWorkflowInformerHandler() {
  }
  },
  DeleteFunc: func(obj interface{}) {
- key, err := cache.MetaNamespaceKeyFunc(obj)
+ key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
  if err == nil {
  cc.wfQueue.Add(key)
  }