fix: Add noItemsFound for en (#51244)

Author: RoyLee1224

airflow-core/src/airflow/ui/src/i18n/locales/en/common.json

@@ -44,6 +44,7 @@
     "plugins": "Plugins",
     "security": "Security"
   },
+  "noItemsFound": "No {{modelName}} found",
   "pools": {
     "deferred": "Deferred",
     "open": "Open",