add knowledge cutoff date for gpt-4-turbo-2024-04-09

app/constant.ts

@@ -128,6 +128,7 @@ export const GEMINI_SUMMARIZE_MODEL = "gemini-pro";
 export const KnowledgeCutOffDate: Record<string, string> = {
   default: "2021-09",
   "gpt-4-turbo": "2023-12",
+  "gpt-4-turbo-2024-04-09": "2023-12",
   "gpt-4-turbo-preview": "2023-12",
   "gpt-4-1106-preview": "2023-04",
   "gpt-4-0125-preview": "2023-12",