在useRef()鉤子內的 React 功能組件中聲明靜態變量與簡單地將它們聲明為對象屬性有什么優點或缺點。useRef 方法：import React, { useRef } from "react";const MyComponent = () => {  const staticProp = useRef("Hello, World!");  return (    <div>{staticProp.current}</div>  )}export default MyComponent;對象屬性方法：import React from "react";const MyComponent = () => {  return (    <div>{MyComponent.staticPro}</div>  )}MyComponent.staticProp = "Hello, World!";export default MyComponent;