Flutter Stack size to sibling : <p>Is there a way to size a stack child automatically to its largest sibling?
I.e. if I have a <code>Stack</code> with a <code>ListTile</code> and a <code>Container</code> on top, how do I make sure the <code>Container</code> covers the entire <code>ListTile</code>?</p>

<p>Example: </p>

<pre><code>new Stack(children: &lt;Widget&gt;[
      new ListTile(
          leading: new AssetImage('foo.jpg'),
          title: new Text('Bar'),
          subtitle: new Text('yipeee'),
          isThreeLine: true,
      ),
      new Container(color: Colors.grey, child: new Text('foo'))
 ],
)
</code></pre>

<p>I tried to make it work with <code>Row</code>, <code>Column</code> and <code>Expanded</code> but am running into problems with unbounded constraints.</p>

<p>Is there a way to size the <code>Container</code> (or any other widget such as a <code>GestureDetector</code>) to its largest sibling in the stack?</p>
