title: Setting initial values to dynamic form in antd 4
body: <p>I have a problem while creating dynamic form in antd4, following <a href="https://ant.design/components/form/#components-form-demo-dynamic-form-item" rel="nofollow noreferrer">this example from docs</a>. </p>
  
  <p>I want to use dynamic form to edit object which already has some values. </p>
  
  <p>In this sandbox I created a new array of initial values: <a href="https://codesandbox.io/s/dynamic-form-item-ant-design-demo-slm8o?file=/index.js:636-649" rel="nofollow noreferrer">https://codesandbox.io/s/dynamic-form-item-ant-design-demo-slm8o?file=/index.js:636-649</a></p>
  
  <p>The goal is to achieve this state when opening form:</p>
  
  <p><a href="https://i.stack.imgur.com/a9yjn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/a9yjn.png" alt="enter image description here"></a></p>
  
  <p>Grateful for any help.</p>