title: adding image behind UITableView make large title stop collapsing when scroll
body: <p>I have a navigation large title and a table view, it all works fine, when I scroll the table view, the large title was still collapsing.</p>
  <p>But after I add a image behind the table view, it's not collapsing anymore.</p>
  <p>I found the answer <a href="https://stackoverflow.com/a/52035243/6800631">here</a> that says it will not work if there's a subview under the SafeArea other than UITableView, but if that's the case, how can i add a background image behind the UITableView?</p>
  <p><strong>Disclaimer:</strong> I have this code because I want my image to move up when the large title collapse</p>
  <pre><code>backgroundImageTopConstraint.constant = backgroundImageTopConstraint.constant - (self.navigationController?.navigationBar.frame.size.height)!
  </code></pre>