philippHorn 95585b4408
fix: Crash in argument parsing when using Openrouter (#5667)
## Why are these changes needed?
See issue for a bug description.
The problem was that a lot of openrouter models return `""` as
`tool_call.arguments`, which caused `json.loads` to fail
## Related issue number
https://github.com/microsoft/autogen/issues/5666
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Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>
2025-02-23 22:35:13 -08:00
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