chore: disable llm mode by default

Author: DeepanshKhurana

Diff for: config.yml

@@ -2,7 +2,7 @@ default:
   rhino_log_level: !expr Sys.getenv("RHINO_LOG_LEVEL", "INFO")
   rhino_log_file: !expr Sys.getenv("RHINO_LOG_FILE", NA)
   llm:
-    enabled: TRUE
+    enabled: FALSE
     provider: "openai"
     model: "gpt-4o"
     api_key: !expr Sys.getenv("LLM_API_KEY", NA)