Add automatic notification polling for grouped notifications (#31513)

app/javascript/mastodon/api/notifications.ts

@@ -4,6 +4,7 @@ import type { ApiNotificationGroupsResultJSON } from 'mastodon/api_types/notific
 export const apiFetchNotifications = async (params?: {
   exclude_types?: string[];
   max_id?: string;
+  since_id?: string;
 }) => {
   const response = await api().request<ApiNotificationGroupsResultJSON>({
     method: 'GET',