[MM-56904] Reduce the number of api requests made to fetch user information for GMs on page load (#27149)

* use new endpoint to fetch group members

server/i18n/en.json

@@ -9486,6 +9486,10 @@
     "id": "model.preference.is_valid.id.app_error",
     "translation": "Invalid user id."
   },
+  {
+    "id": "model.preference.is_valid.limit_visible_dms_gms.app_error",
+    "translation": "Invalid value for limit_visible_dms_gms."
+  },
   {
     "id": "model.preference.is_valid.name.app_error",
     "translation": "Invalid name."