Refactor: Remove unnecessary string conversion in stream_gemini method

[pyob-bot]

Summary of Changes

This Pull Request refactors the stream_gemini method within the CoreUtilsMixin class in src/pyob/core_utils.py. The change involves removing the unnecessary str conversion from the method's return statement.

Technical Impact

Summary

• Refactor: Simplifies the return statement of stream_gemini by removing redundant string conversion.

Details

1. Performance: By eliminating the str conversion, the method now returns the direct output of stream_gemini, which can slightly enhance performance since string conversion is avoided where not needed.

2. Code Clarity: The code becomes cleaner and easier to understand as it directly reflects the intent to process the stream data rather than an immediate string representation.

3. Functionality: There is no change in functionality. The stream_gemini function will continue to operate as intended, with the only difference being the absence of redundant conversion, which does not affect the stream output.

This modification ensures that the codebase remains efficient and maintainable, strictly adhering to the DRY (Don't Repeat Yourself) principle.

Feel free to review the changes and raise any concerns or questions you might have. Thank you!