When the ascend910b is used to run the Wan2.1 model, an error message is reported for operator Conv3D

### Expected Behavior

I use the official sample workflow, 480 model, reported the following error, hope to get your advice, thank you first!
我用的是官方的示例工作流，480的模型，报如下错，希望得到你的指点，先谢为敬！

o see the GUI go to: http://127.0.0.1:8188/
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
got prompt
Using pytorch attention in VAE
Using pytorch attention in VAE
VAE load device: npu:0, offload device: cpu, dtype: torch.bfloat16
Requested to load CLIPVisionModelProjection
loaded completely 60916.70234375 1208.09814453125 True
CLIP/text encoder model load device: npu:0, offload device: cpu, current: cpu, dtype: torch.float16
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
Requested to load WanTEModel
loaded completely 59657.76875 10835.4765625 True
Requested to load WanVAE
loaded completely 46630.3974609375 242.02829551696777 True
/home/ma-user/work/ComfyUI/comfy/ldm/wan/vae.py:209: UserWarning: current tensor is running as_strided, don't perform inplace operations on the returned value. If you encounter this warning and have precision issues, you can try torch.npu.config.allow_internal_format = False to resolve precision issues. (Triggered internally at build/CMakeFiles/torch_npu.dir/compiler_depend.ts:123.)
feat_cache[idx][:, :, -1, :, :].unsqueeze(2).to(
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
/home/ma-user/work/ComfyUI/custom_nodes/ComfyUI-GGUF/loader.py:91: UserWarning: The given NumPy array is not writable, and PyTorch does not support non-writable tensors. This means writing to this tensor will result in undefined behavior. You may want to copy the array to protect its data or make it writable before converting it to a tensor. This type of warning will be suppressed for the rest of this program. (Triggered internally at /pytorch/torch/csrc/utils/tensor_numpy.cpp:206.)
torch_tensor = torch.from_numpy(tensor.data) # mmap
model weight dtype torch.float16, manual cast: None
model_type FLOW
Requested to load WAN21
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
127.0.0.1: Client protocols [''] don’t overlap server-known ones ()
loaded completely 46230.6442546875 31734.013916015625 True
[ComfyUI-Easy-Use] server: v1.2.8 Loaded
[ComfyUI-Easy-Use] web root: /home/ma-user/work/ComfyUI/custom_nodes/ComfyUI-Easy-Use/web_version/v2 Loaded
gguf qtypes: F32 (823), F16 (480)
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