title: In Flutter' Stepper, how to put the title of the Step below the counter?
body: <p>If use the Stepper in horizontal mode, I get the following result.</p>
  
  <p><a href="https://i.stack.imgur.com/EQ0fO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EQ0fO.png" alt="Stepper in horziontal mode"></a></p>
  
  <p>However, I want the title of the Step to appear below the counter. How can I achieve that in Flutter? </p>