feat: handle dashboard role

src/routes.jsx

@@ -4,6 +4,9 @@ const routes = [
   {
     id: 'org.openedx.frontend.route.learnerDashboard.main',
     path: '/',
+    handle: {
+      role: 'org.openedx.frontend.role.dashboard'
+    },
     Component: Main
   }
 ];