Fix `GraphBuildingError` when using `g.stream` multiple times#3695

DouweM merged 3 commits intopydantic:mainpydantic/pydantic-ai:mainfrom

adtyavrdhn:graph_building_error_dup_wrapper_idadtyavrdhn/pydantic-ai:graph_building_error_dup_wrapper_idCopy head branch name to clipboard