[Enhancement] Update type hint for stage_connector_spec in OmniEngineArgs and AsyncOmniEngineArgs

- Changed type hint for stage_connector_spec from 'any' to 'Any' for improved type checking and consistency.
- Ensured compatibility with typing standards in the arg_utils module.

Signed-off-by: [Your Name] <your.email@example.com>

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>

vllm_omni/engine/arg_utils.py

@@ -1,4 +1,5 @@
 from dataclasses import dataclass, field
+from typing import Any
 
 from transformers.models.qwen3_omni_moe.configuration_qwen3_omni_moe import Qwen3OmniMoeTextConfig
 from vllm.engine.arg_utils import EngineArgs
@@ -69,7 +70,7 @@ class OmniEngineArgs(EngineArgs):
     engine_output_type: str | None = None
     hf_config_name: str | None = None
     custom_process_next_stage_input_func: str | None = None
-    stage_connector_spec: dict[str, any] = field(default_factory=dict)
+    stage_connector_spec: dict[str, Any] = field(default_factory=dict)
     async_chunk: bool = False
     omni_kv_config: dict | None = None
 
@@ -167,7 +168,7 @@ class AsyncOmniEngineArgs(AsyncEngineArgs):
     engine_output_type: str | None = None
     hf_config_name: str | None = None
     custom_process_next_stage_input_func: str | None = None
-    stage_connector_spec: dict[str, any] = field(default_factory=dict)
+    stage_connector_spec: dict[str, Any] = field(default_factory=dict)
     async_chunk: bool = False
     omni_kv_config: dict | None = None