fix: Asign entry_id to engage screen readers accessibility

Author: abrahammordev

components/ILIAS/UI/resources/js/MainControls/src/mainbar.renderer.js

@@ -98,6 +98,8 @@
                 //https://www.w3.org/TR/wai-aria-practices-1.1/examples/accordion/accordion.html
                 element.attr('role', 'region');
                 element.attr('aria-labelledby', triggerer_id);
+                actions.focusSubentry(entry_id);
+
                 if(isInView && !thrown) {
                     element.trigger('in_view'); //this is most important for async loading of slates,
                                                 //it triggers the GlobalScreen-Service.