无法更新子组件的状态

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

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

  const updateCount = () => {
    setCount(count + 1);
  };

  return (
    <div>
      <h1>Count: {count}</h1>
      <ChildComponent updateCount={updateCount} />
    </div>
  );
};

export default ParentComponent;

// 子组件
import React from 'react';

const ChildComponent = ({ updateCount }) => {
  const handleClick = () => {
    updateCount();
  };

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

export default ChildComponent;