title: textInputAction: TextInputAction.next failing to move user focus to next element
body: <p>When I use TextInputAction and set it to next, the button does change on my simulator device however it doesn't do anything, User interaction is not moved into the next element.
  Have opened a ticket on the FLutter `gitHUb page as well as in the chat rooms but no help so far and would like to keep the ball rolling on my training :) </p>
  
  <p><a href="https://github.com/flutter/flutter/issues/47749" rel="nofollow noreferrer">https://github.com/flutter/flutter/issues/47749</a></p>