Query projects of subgroups in productivity analytics

changelogs/unreleased/33128-cannot-find-projects-within-subgroups-when-you-select-a-top-level-g.yml

+---
+title: Query projects of subgroups in productivity analytics
+merge_request: 24335
+author:
+type: fixed

ee/app/assets/javascripts/analytics/productivity_analytics/components/filter_dropdowns.vue

@@ -68,6 +68,7 @@ export default {
     per_page: projectsPerPage,
     with_shared: false, // exclude forks
     order_by: LAST_ACTIVITY_AT,
+    include_subgroups: true,
   },
 };
 </script>