4.8.13 test (#3102)

* fix: loop index;edge parent check

* perf: reference invalid check

* fix: ts

projects/app/src/web/core/workflow/utils.ts

@@ -413,8 +413,10 @@ export const checkWorkflowNodeAndConnection = ({
               return true;
             }
 
-            return input.required && !isValidArrayReferenceValue(input.value, nodeIds);
+            return !isValidArrayReferenceValue(input.value, nodeIds);
           }
+
+          // Single reference
           return input.required && !isValidReferenceValue(input.value, nodeIds);
         }
         return false;