converting defaultdict to dict in RunResponse.to_dict()

[ravin-m]

asdict doesn't support defaultdict in Python 3.11. So converting RunResponse.metrics to dict before running asdict.

Description

• Summary of changes: Converting RunResponse.metrics to dict in RunResponse.to_dict()
• Related issues: bpo-35540 dataclasses.asdict support defaultdict fields python/cpython#32056
• Motivation and context: asdict doesn't support defaultdict in Python 3.11. So RunResponse.to_dict() doesn't work.
• Environment or dependencies: None
• Impact on metrics: (If applicable) None

Fixes # (issue)

asdict doesn't support defaultdict in Python 3.11. So RunResponse.to_dict() doesn't work.
https://github.com/python/cpython/pull/32056c

Type of change

Please check the options that are relevant:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Model update (Addition or modification of models)
• Other (please describe):

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Checklist

• Adherence to standards: Code complies with Agno’s style guidelines and best practices.
• Formatting and validation: You have run ./scripts/format.sh and ./scripts/validate.sh to ensure code is formatted and linted.
• Self-review completed: A thorough review has been performed by the contributor(s).
• Documentation: Docstrings and comments have been added or updated for any complex logic.
• Examples and guides: Relevant cookbook examples have been included or updated (if applicable).
• Tested in a clean environment: Changes have been tested in a clean environment to confirm expected behavior.
• Tests (optional): Tests have been added or updated to cover any new or changed functionality.

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Additional Notes

Include any deployment notes, performance implications, security considerations, or other relevant information (e.g., screenshots or logs if applicable).

[dirkbrnd]

@ravin-m thanks for this! I fixed it in another way and we are releasing the fix now.