ChatDeepSeek.class use the superclass BaseChatOpenAI, but the ls_provider="openai", it shoud be "deepseek"

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Checked other resources

• This is a bug, not a usage question. For questions, please use the LangChain Forum (https://forum.langchain.com/).
• I added a clear and descriptive title that summarizes this issue.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
• I read what a minimal reproducible example is (https://stackoverflow.com/help/minimal-reproducible-example).
• I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS.

Example Code

    def _get_ls_params(
        self, stop: Optional[list[str]] = None, **kwargs: Any
    ) -> LangSmithParams:
        """Get standard params for tracing."""
        params = self._get_invocation_params(stop=stop, **kwargs)
        ls_params = LangSmithParams(
            ls_provider="openai",
            ls_model_name=self.model_name,
            ls_model_type="chat",
            ls_temperature=params.get("temperature", self.temperature),
        )
        if ls_max_tokens := params.get("max_tokens", self.max_tokens) or params.get(
            "max_completion_tokens", self.max_tokens
        ):
            ls_params["ls_max_tokens"] = ls_max_tokens
        if ls_stop := stop or params.get("stop", None):
            ls_params["ls_stop"] = ls_stop
        return ls_params

Error Message and Stack Trace (if applicable)

Description

I'm using the from langchain_deepseek.chat_models import ChatDeepSeek as chat model, but LangSmith tracking the ls_provider as "openai", it should be "deepseek".

may be overwrite the method in class ChatDeepSeek?

 def _get_ls_params(self, stop: Optional[list[str]] = None, **kwargs: Any) -> LangSmithParams:
        ls_params = super()._get_ls_params(stop=stop, **kwargs)
        ls_params.ls_provider = "deepseek"
        return ls_params

System Info

Python Version: 3.11.0 (v3.11.0:deaf509e8f, Oct 24 2022, 14:43:23) [Clang 13.0.0 (clang-1300.0.29.30)]

Package Information

langchain_core: 0.3.74
langchain: 0.3.27
langsmith: 0.4.13
langchain_deepseek: 0.1.4
langchain_openai: 0.3.29
langchain_text_splitters: 0.3.9