title: React form hook - FormProvider not working
body: <p>I'm trying to use 'FormProvider' to connect the form to a child component input.
  I created the exact same sample from the React-Form-Hook Docs and when trying to submit the form, it doesn't recognize the child component input. What I'm missing here?</p>
  <p>Here is my code:<a href="https://codesandbox.io/s/gracious-merkle-k8pje?file=/src/App.js:32-44" rel="nofollow noreferrer">Sample Code</a></p>