ok i am having issue using openai assistant using llamaindex: i got this error: ImportError: cannot import name 'MessageContentText' from 'openai.types.beta.threads' (/llm-test/pythonProject/.venv/lib/python3.12/site-packages/openai/types/beta/threads/__init__.py). Did you mean: 'MessageContentDelta'? I think we need to open issue and change or update the import then open PR