feat: qwen-image-edit-2509 lightning support

[lmxyy]

Motivation

Modifications

Checklist

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[jorgemcgomes]

@lmxyy After some testing, these models mostly don't work.
Most of the times, they don't make the requested changes, even when the task is very easy.

• The non-lightning nunchaku version works well, even with a very low number of steps (8).
• The lightning versions (tested both 4 steps and 8 steps) don't do anything most of the times.

This LoRA seems to be destroying the model's capabilities. The v1 Edit LoRA should probably be used instead.

Prompt: Change the image style to low poly 3D

Input

nunchaku-qwen-image-edit-2509/svdq-int4_r128-qwen-image-edit-2509-lightningv2.0-8steps.safetensors

nunchaku-qwen-image-edit-2509/svdq-int4_r128-qwen-image-edit-2509.safetensors
8 steps only, true_cfg_scale=4.0

[goodie1974]

so? It's fixed now?