Add back beartype (#3967)

### What problem does this PR solve?

Add back beartype

### Type of change

- [x] Refactoring

agent/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()

api/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()

deepdoc/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()

intergrations/chatgpt-on-wechat/plugins/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()
+
 from .ragflow_chat import RAGFlowChat
 
 __all__ = [

rag/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()

sdk/python/ragflow_sdk/__init__.py

+from beartype.claw import beartype_this_package
+beartype_this_package()
+
 import importlib.metadata
 
 from .ragflow import RAGFlow