title: antd Switch checked property
body: <p>I want to ask a question about the Swtich component from <code>antd</code> the React UI library.</p>
  <pre><code>&lt;Switch checked={true} /&gt;
  </code></pre>
  <p>When I set checked property I no longer can change it!
  I have looked at the API on the <a href="https://ant.design/components/switch/" rel="nofollow noreferrer">antd website</a> but I can't understand why it doesn't work.</p>
  <p>Please also have a look at <a href="https://codesandbox.io/s/sleepy-snyder-gbwxz?file=/src/App.js" rel="nofollow noreferrer">my sample code here on codesandbox.io</a></p>