无法更改父组件的状态并重新呈现

// 父组件
import React, { useState } from 'react';
import ChildComponent from './ChildComponent';

function ParentComponent() {
  const [count, setCount] = useState(0);

  const handleCountChange = (newCount) => {
    setCount(newCount);
  };

  return (
    <div>
      <p>Count: {count}</p>
      <ChildComponent count={count} onCountChange={handleCountChange} />
    </div>
  );
}

export default ParentComponent;

// 子组件
import React from 'react';

function ChildComponent({ count, onCountChange }) {
  const handleClick = () => {
    const newCount = count + 1;
    onCountChange(newCount);
  };

  return (
    <button onClick={handleClick}>Increase Count</button>
  );
}

export default ChildComponent;