[Bug]: stream response from /v1/chat/completions should return same created param

[781574155]

What happened?

langchain's merge_dicts function will raise excepiton on different value.

Relevant log output

Are you a ML Ops Team?

No

What LiteLLM version are you on ?

v1.71.1

Twitter / LinkedIn details

No response

[781574155]

vllm return same created param. litellm modify it.