[main][BugFix] Fixed an accuracy bug of Qwen3-next-MTP when batched inferring (#4932)

### What this PR does / why we need it?
Fixes an accuracy bug of Qwen3-next-MTP when batched inferring.
It is descibed in
https://github.com/vllm-project/vllm-ascend/issues/4930.

- vLLM version: v0.12.0
- vLLM main:
ad32e3e19c

Signed-off-by: drslark <slarksblood@qq.com>

vllm_ascend/patch/worker/patch_module.py

@@ -5,6 +5,8 @@ import torch
 # TODO When the operator of argsort is ready, this patch must be removed.
 def _argsort(tensor, *args, **kwargs):
     if tensor.dtype == torch.bool:
+        # If it is not stable, it will have redundant outputs.
+        kwargs["stable"] = True
         return torch.argsort(tensor.to(torch.int32), *args, **kwargs)
     else:
         return torch.argsort(tensor, *args, **kwargs)