update 优化usePanel方法

src/components/BpmnDesign/hooks/usePanel.ts

@@ -97,9 +97,10 @@ export default (ops: Options) => {
       modeling.updateModdleProperties(element, propertiesElements, {
         values: [...propertiesElements.get('values'), propertyElements]
       });
-    }
+    } else {
       propertyElements.name = name;
       propertyElements.value = value;
+    }
     return propertyElements;
   };