Switched langchain llm callbacks to use genai utils handler#3889

wrisa wants to merge 5 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python-contrib:mainfrom

wrisa:genai-instrumentation-langchain-inference-using-geni-utilswrisa/opentelemetry-python-contrib:genai-instrumentation-langchain-inference-using-geni-utilsCopy head branch name to clipboard