title: What is the equivalent to UpdateSourceTrigger=PropertyChanged when using x:Bind?
body: <pre><code>&lt;TextBox Text="{Binding MyTitle, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/&gt;
  </code></pre>
  
  <p>Is there an equivalent to this when using <code>x:Bind</code>?</p>
  
  <p>If I use it like this, it only updates when focus is changed.</p>
  
  <pre><code>&lt;TextBox Text="{x:Bind ViewModel.MyTitle, Mode=TwoWay}" /&gt;
  </code></pre>