Gemini list as tool call param fix phi 2238

[ysolanky]

Description

This PR adds support for tools with input as a list for Gemini

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
• Infrastructure change

Checklist

• My code follows Phidata's style guidelines and best practices
• I have performed a self-review of my code
• I have added docstrings and comments for complex logic
• My changes generate no new warnings or errors
• I have added cookbook examples for my new addition (if needed)
• I have updated requirements.txt/pyproject.toml (if needed)
• I have verified my changes in a clean environment

[dirkbrnd]

Maybe just add a comment with example?

[ysolanky]

@dirkbrnd this change was made just to handle the edge case when the tool param is a list. For example, our ArxivTools toolkit was breaking with Gemini prior to this.

[dirkbrnd]

Happy if you merge