fix: direct client pydantic type casting (#1145)

# What does this PR do?
- Closes #1142 
- Root cause is due to having `Union[str, AgenToolGroupWithArgs]`

## Test Plan
- Test with script described in issue. 

- Print out final converted pydantic object
<img width="1470" alt="image"
src="https://github.com/user-attachments/assets/15dc9cd0-f37a-4b91-905f-3fe4f59a08c6"
/>


[//]: # (## Documentation)
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Xi Yan 2025-02-18 16:07:54 -08:00 committed by GitHub
parent 8585b95a28
commit e8cb9e0adb
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6 changed files with 26 additions and 13 deletions

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@ -77,7 +77,7 @@ def typeannotation(
"""
def wrap(cls: Type[T]) -> Type[T]:
setattr(cls, "__repr__", _compact_dataclass_repr)
cls.__repr__ = _compact_dataclass_repr
if not dataclasses.is_dataclass(cls):
cls = dataclasses.dataclass( # type: ignore[call-overload]
cls,