[Web] Can't use Conv3DNaive on webgpu

[pdufour]

Describe the issue

When there is a Conv3d op in an q4f16 quantized onnx model, it throws the following error:

An uncaught WebGPU validation error was raised: Error while parsing WGSL: :51:15 error: return statement type must match its function return type, returned 'f16', expected 'f32'
              return get_xByIndices(aIndices);
              ^^^^^^


 - While validating [ShaderModuleDescriptor ""Conv3DNaive""]
 - While calling [Device].CreateShaderModule([ShaderModuleDescriptor ""Conv3DNaive""]).

I think it's this op here specifically that is causing the error:

This does not happen on WASM, but only on the webgpu exec provider.

To reproduce

Visit https://huggingface.co/spaces/pdufour/Qwen2VL_TransformersJS_Demo (space I setup to use this model)
Select q4f16 model to load
Select example image and type in text and hit enter

Actual results
See error mentioned above

Expected results
Should process query

ONNX Runtime Version or Commit ID

1.20.1

Execution Provider

'webgpu' (WebGPU)

[fs-eire]

Need to implement f16 support for Conv3D.