fix: type conversion in vllm_wrapper

[CHERRY-ui8]

This PR addresses potential type mismatches for critical parameters within the vllm_wrapper.

[gemini-code-assist]

Summary of Changes

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This pull request addresses potential type mismatches for critical parameters within the vllm_wrapper by enforcing explicit type conversions during object initialization. This ensures the stability and correctness of the language model's configuration, preventing runtime errors that could arise from unexpected input types for temperature, top_p, and topk.

Highlights

• Type Conversion: Explicitly casts temperature and top_p parameters to float, and topk to int within the vllm_wrapper initialization to prevent potential type-related issues.

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[gemini-code-assist]

Code Review

This pull request adds explicit type conversions for temperature, top_p, and topk in VLLMWrapper. While this improves robustness, the current implementation introduces redundancy and highlights a potential bug related to a topk/top_k parameter inconsistency between the wrapper and its base class. I've left a detailed comment explaining the issues and suggesting a refactor to centralize the initialization logic, improve clarity, and fix the likely bug.