AttributeError: 'ImportErrorProfileModel' object has no attribute 'profile

### Checked other resources - [x] This is a bug, not a usage question. - [x] I added a clear and descriptive title that summarizes this issue. - [x] I used the GitHub search to find a similar question and didn't find it. - [x] I am sure that this is a bug in LangChain rather than my code. - [x] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package). - [x] This is not related to the langchain-community package. - [x] I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS. ### Package (Required) - [x] langchain - [ ] langchain-openai - [ ] langchain-anthropic - [ ] langchain-classic - [x] langchain-core - [ ] langchain-model-profiles - [ ] langchain-tests - [ ] langchain-text-splitters - [ ] langchain-chroma - [ ] langchain-deepseek - [ ] langchain-exa - [ ] langchain-fireworks - [ ] langchain-groq - [ ] langchain-huggingface - [ ] langchain-mistralai - [ ] langchain-nomic - [ ] langchain-ollama - [ ] langchain-openrouter - [ ] langchain-perplexity - [ ] langchain-qdrant - [ ] langchain-xai - [ ] Other / not sure / general ### Related Issues / PRs _No response_ ### Reproduction Steps / Example Code (Python) ```python Build langchain @ 1.2.13 with langchain-core 1.2.22 ``` ### Error Message and Stack Trace (if applicable) ```shell ________________ test_summarization_middleware_missing_profile _________________ [gw1] darwin -- Python 3.14.3 /nix/store/dfkim8vahgdqhk1lrxz1j4mcighlrk99-python3-3.14.3/bin/python3.14 def test_summarization_middleware_missing_profile() -> None: """Ensure automatic profile inference falls back when profiles are unavailable.""" class ImportErrorProfileModel(BaseChatModel): @override def _generate( self, messages: list[BaseMessage], stop: list[str] | None = None, run_manager: CallbackManagerForLLMRun | None = None, **k…