fix(provider): strip Nvidia Kimi tool schemas - #28997

The following comment was made by an LLM, it may be inaccurate:

I found a potentially related PR:

#25492: fix(provider): limit JSON schema depth for Moonshot/Kimi
#25492

This PR appears to address a similar issue with Kimi/Moonshot models and JSON schema handling. While the current PR (28997) specifically targets Nvidia-hosted Kimi models with a schema stripping approach, PR #25492 may have tackled a related schema depth limitation for the same provider. You should verify whether #25492 is still open or merged, and if there's any overlap in scope or approach.

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