change fallback model to "default"

Author: jordanstephens

samples/managed-llm-provider/app/app.py

@@ -20,7 +20,7 @@
 # Set the environment variables for the chat model
 LLM_URL = os.getenv("LLM_URL", default_openai_base_url) + "chat/completions"
 # Fallback to OpenAI Model if not set in environment
-MODEL_ID = os.getenv("LLM_MODEL", "gpt-4-turbo")
+MODEL_ID = os.getenv("LLM_MODEL", "default")
 
 # Get the API key for the LLM
 # For development, you can use your local API key. In production, the LLM gateway service will override the need for it.