我剛剛啟動(dòng)了一個(gè)新的 create-react-app 項(xiàng)目，并注意到 React 渲染了兩次組件！我在package.json中的反應(yīng)版本是"react": "^16.13.1"import React, { useRef } from "react";const App = () => {  const renders = useRef(0);  console.log("renders: ", renders.current++);  return (    <div>      Hello    </div>  );};這在第一次渲染時(shí)產(chǎn)生：renders: 0renders: 0現(xiàn)在，如果我添加一個(gè)按鈕來(lái)增加狀態(tài)，每個(gè)狀態(tài)變化也會(huì)產(chǎn)生兩個(gè)額外的渲染：import React, { useRef } from "react";const App = () => {  const [count, setCount] = useState(0);  const renders = useRef(0);  console.log("renders: ", renders.current++);  return (    <div>      <button onClick={() => setCount(count + 1)}>increment</button>      <div>count: {count}</div>    </div>  );};這將導(dǎo)致：//--- initial renderrenders: 0renders: 0//--- first clickrenders: 1renders: 2//--- second clickrenders: 3renders: 4//--- third clickrenders: 5renders: 6這是正常現(xiàn)象還是最新版本的 React 中的錯(cuò)誤？