Fix missing footer, so auto-refresh and fullscreen are unavailable (#12806)

* Fix missing footer, when there's a token

* Flow simplified

frontend/src/metabase/public/components/EmbedFrame.jsx

@@ -61,9 +61,7 @@ export default class EmbedFrame extends Component {
     } = this.props;
     const { innerScroll } = this.state;
 
-    const showFooter =
-      !MetabaseSettings.hideEmbedBranding() ||
-      (actionButtons && actionButtons.length > 0);
+    const showFooter = !MetabaseSettings.hideEmbedBranding() || actionButtons;
 
     const { bordered, titled, theme, hide_parameters } = {
       ...DEFAULT_OPTIONS,