Patch conversion script qwen3 moe

[kanpuriyanawab]

1. add save_to_preset in qwen3 moe
2. add one more qwen3 moe checkout

[gemini-code-assist]

Summary of Changes

Hello @kanpuriyanawab, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the Qwen3 Mixture-of-Experts (MoE) checkpoint conversion script by introducing support for a new model variant, Qwen3-235B-A22B. It also adds the crucial capability to save the converted models to a preset, streamlining the workflow for users. Additionally, the script's internal structure was refactored for better organization and testability.

Highlights

• New Model Preset Support: Added a new preset, "qwen3_moe_235b_a22b_en", to the conversion script, enabling support for an additional Qwen3 Mixture-of-Experts model variant.
• Save to Preset Functionality: Implemented the save_to_preset method call within the main conversion logic, allowing the converted Qwen3 MoE model to be saved to a specified preset path.
• Code Refactoring: Refactored the validate_output function to improve modularity by accepting an already initialized Qwen3MoeCausalLM object, and moved its instantiation to the main execution block.

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[gemini-code-assist]

Code Review

This pull request adds a new preset for Qwen3 MoE and implements the save_to_preset functionality in the conversion script. While the main goals are met, a refactoring of the validate_output function has introduced a critical bug that will cause the script to fail with a TypeError. The CausalLM model instance is created after it is needed, and the function call that uses it has not been updated. My review includes a comment on how to fix this issue.