title: ListView with small amount of items is not scrollable
body: <p>I have very common ListView (in a very common Windows Universal app), which is placed in a very common grid on a very common page.</p>
  
  <pre><code>&lt;Grid Margin="12,24,12,0"&gt;
  
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition Height="*" /&gt;
      &lt;/Grid.RowDefinitions&gt;
  
      &lt;ListView 
              ItemTemplate="{StaticResource AccountsItemTemplate}"
              ItemsSource="{Binding AccountList}" /&gt; 
  &lt;/Grid&gt;
  </code></pre>
  
  <p>The thing is: if i have 3-5 items (so they all fit on a screen), scroller is disabled. If i have more than a dozen, then scroller is enabled and everything's fine.</p>
  
  <p>How can i force scroller to appear in a listview which is smaller than a screen size?</p>