title: How to initially have an Item when antd Dynamic Form renders for the first time
body: <p>The default of <a href="https://ant.design/components/form/?locale=en-US#header" rel="nofollow noreferrer">Dynamic Form</a> had no <code>item</code> when the form renders, you need to click <code>+ Add field</code> in order to add new <code>item</code>.</p>
  
  <p>I want to initially have an <code>item</code> by default when the form renders for the first time.</p>
  
  <p>Default <code>Form</code> when the component renders for the first time:
  <a href="https://i.stack.imgur.com/GnGNu.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GnGNu.jpg" alt="enter image description here"></a></p>
  
  <p>I want something like this when the component renders for the first time:</p>
  
  <p><a href="https://i.stack.imgur.com/YnCdV.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YnCdV.jpg" alt="enter image description here"></a></p>