title: mgt filelist(react) component - property to indicate if content should refresh
body: <p>I'm developing a MS Teams app in React and using the mgt-filelist to show files from a sharepoint list.</p>
  <pre><code>&lt;FileList
                  siteId={sharepointSiteID}
                  itemPath={sharepointItemPath}
  ...&gt;
  </code></pre>
  <p>I am adding controls dynamically to to my web page and when I do that the contents of the mgt-filelist are always refreshed.
  Can I somehow tell the mgt-filelist that it does not need to refresh?</p>