feat: support array reference multi-select (#3041)

* feat: support array reference multi-select

* fix build

* fix

* fix loop multi-select

* adjust condition

* fix get value

* array and non-array conversion

* fix plugin input

* merge func

packages/service/core/workflow/dispatch/tools/runUpdateVar.ts

@@ -40,11 +40,13 @@ export const dispatchUpdateVariable = async (props: Props): Promise<Response> =>
             })
           : formatValue;
       } else {
-        return getReferenceVariableValue({
+        const value = getReferenceVariableValue({
           value: item.value,
           variables,
           nodes: runtimeNodes
         });
+
+        return value;
       }
     })();