langchain

98779797 - community[patch]: Use get_fields adapter for pydantic (#25191)

community[patch]: Use get_fields adapter for pydantic (#25191) Change all usages of __fields__ with get_fields adapter merged into langchain_core. Code mod generated using the following grit pattern: ``` engine marzano(0.1) language python `$X.__fields__` => `get_fields($X)` where { add_import(source="langchain_core.utils.pydantic", name="get_fields") } ```