title: iOS UIAlertController bold button changed in 8.3
body: <p>UIAlertController with two buttons with styles set:</p>
  
  <pre><code>UIAlertActionStyle.Cancel
  UIAlertActionStyle.Default
  </code></pre>
  
  <p>in iOS 8.2, the Cancel button is non-bold and Default is bold.
  In iOS 8.3 they have switched round</p>
  
  <p>You can see it Apple's own apps e.g., Settings > Mail > Add Account > iCloud > enter invalid data, then it shows like this on 8.3:</p>
  
  <p>Unsupported Apple ID</p>
  
  <p>Learn More (bold)
  OK (non-bold)</p>
  
  <p>whereas it was the other way round for 8.2.</p>
  
  <p>Any workaround to make it like 8.2 again. Why has it changed?</p>