[Bug] Model Qwen3.5 9b does not run with WebGPU

[natke]

Describe the issue

natke@timmy % foundry run qwen3.5-9b 
● error: IPC error 'op_handler_failed': Error loading model qwen3.5-9b-generic-gpu:3: Error: 
Microsoft.ML.OnnxRuntimeGenAI.OnnxRuntimeGenAIException: This is an invalid model. Error: 
Duplicate definition of name (image_grid_thw_CUDAExecutionProvider).
   at Microsoft.ML.OnnxRuntimeGenAI.Result.VerifySuccess(IntPtr) + 0x48
   at Microsoft.ML.OnnxRuntimeGenAI.Model..ctor(Config) + 0x20
   at Microsoft.Neutron.OpenAI.Provider.OnnxLoadedModel..ctor(String, Config, GenAIConfig, 
InferenceModel, OnnxEP) + 0x64
   at Microsoft.AI.Foundry.Local.ModelManager.<LoadModelAsync>d__9.MoveNext() + 0xb78
--- End of stack trace from previous location ---
   at 
Microsoft.AI.Foundry.Local.NativeInterop.<>c__DisplayClass10_0.<<ExecuteCommandManaged>b__5>d.Move
Next() + 0x84
--- End of stack trace from previous location ---
   at Microsoft.AI.Foundry.Local.NativeInterop.<ExecuteWithTracker>d__9.MoveNext() + 0xa8
Hint: Try 'foundry server stop' then 'foundry server start'.

Foundry Local version: 0.10.3
O/S: macOS

To reproduce

brew install foundrylocal
foundry run qwen3.5-9b

Urgency

No response

Platform and architecture

Windows X64

OS Version

macOS 15.7.9

Installation type

Released package/binary

Foundry Local version

0.10.3

API or surface area

CLI

Hardware acceleration/backend

WebGPU/CUDA

Backend/runtime version

No response