convert : support Qwen3.5/Qwen3.5 Moe NVFP4 and add input scales (#20505)
* convert : fix Qwen3.5 NVFP4 conversion
* Updated copilot concerns and rebased
* move into _LinearAttentionVReorderBase and simplify
* --flake
* new_name not needed
* Added input_scale to gguf
* Fixed input_scale addition as tensor
* Added input scale to loader and named _in_s
* Update convert_hf_to_gguf.py
Re-removed input_scale from aux cleanup
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
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Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>