[Bugfix] Fix Hunyuan worker device context (#3768)

Signed-off-by: Chenguang ZHENG <645327136@qq.com>
Signed-off-by: Canlin Guo <961750412@qq.com>
Co-authored-by: Canlin Guo <961750412@qq.com>

vllm_omni/diffusion/distributed/utils.py

@@ -10,5 +10,7 @@ from vllm_omni.platforms import current_omni_platform
 
 def get_local_device() -> torch.device:
     """Return the torch device for the current rank based on detected device type."""
+    if current_omni_platform.is_initialized():
+        return current_omni_platform.get_torch_device(current_omni_platform.current_device())
     local_rank = int(os.environ.get("LOCAL_RANK", 0))
     return current_omni_platform.get_torch_device(local_rank)