message: Decode dollar signs in safe widget URLs before rendering/templating
  Fixes
diff: @@ -636,7 +636,10 @@ export default class AppTile extends React.Component {
  if (ALLOWED_APP_URL_SCHEMES.includes(parsedWidgetUrl.protocol)) {
  safeWidgetUrl = url.format(parsedWidgetUrl);
  }
  - return safeWidgetUrl;
  +
  + // Replace all the dollar signs back to dollar signs as they don't affect HTTP at all.
  + // We also need the dollar signs in-tact for variable substitution.
  + return safeWidgetUrl.replace(/%24/g, '$');
  }
  _getTileTitle() {
  