title: antd input search component not getting blurred on blur()
body: <p>I am using Search Input component of antd library. It comes with a call back function onSearch where we can catch the event target and can use global input functions like blur(), focus(). But that doesn't seem to work. If I attach any other event handler like onClick or onChange it worked. Is it a bug or am I doing something wrong.</p>
  
  <pre><code>import React from 'react';
  import ReactDOM from 'react-dom';
  import 'antd/dist/antd.css';
  import './index.css';
  import { Input } from 'antd';
  
  const Search = Input.Search;
  
  ReactDOM.render(
    &lt;div&gt;
      &lt;Search
        placeholder="input search text"
        onSearch={(value,e) =&gt; {
          console.log(e.target);
          e.target.blur();
          console.log(value)
          }}
        enterButton
        onChange={e =&gt; {
          console.log(e.target)
          e.target.blur()}}
      /&gt;
    &lt;/div&gt;,
    document.getElementById('container')
  );
  </code></pre>