[BugFix] Adapted Qwen3-Next eager mode to v0.11.2 (#4477)

### What this PR does / why we need it?

Adapted Qwen3-Next eager mode to `v0.11.2`.


- vLLM version: v0.11.2
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.2

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

tests/e2e/multicard/test_qwen3_next.py

@@ -24,7 +24,6 @@ Run `pytest tests/e2e/multicard/test_qwen3_next.py`.
 import os
 from unittest.mock import patch
 
-import pytest
 from modelscope import snapshot_download  # type: ignore
 
 from tests.e2e.conftest import VllmRunner
@@ -64,7 +63,6 @@ def test_models_distributed_Qwen3_NEXT_TP4_FULL_DECODE_ONLY():
         del vllm_model
 
 
-@pytest.mark.skip(reason="Fix me, the accuracy is not correct")
 def test_models_distributed_Qwen3_NEXT_MTP_TP4_SIMILARITY():
     example_prompts = [
         "Hello, my name is",
@@ -74,11 +72,14 @@ def test_models_distributed_Qwen3_NEXT_MTP_TP4_SIMILARITY():
     ]
     max_tokens = 20
 
-    with VllmRunner("Qwen/Qwen3-Next-80B-A3B-Instruct",
-                    tensor_parallel_size=4,
-                    max_model_len=4096,
-                    gpu_memory_utilization=0.8,
-                    distributed_executor_backend="mp") as vllm_model:
+    with VllmRunner(
+            "Qwen/Qwen3-Next-80B-A3B-Instruct",
+            tensor_parallel_size=4,
+            max_model_len=4096,
+            gpu_memory_utilization=0.8,
+            distributed_executor_backend="mp",
+            enforce_eager=True,
+    ) as vllm_model:
         ref_outputs = vllm_model.generate_greedy(example_prompts, max_tokens)
     del vllm_model
 
@@ -87,6 +88,7 @@ def test_models_distributed_Qwen3_NEXT_MTP_TP4_SIMILARITY():
                     max_model_len=4096,
                     gpu_memory_utilization=0.8,
                     distributed_executor_backend="mp",
+                    enforce_eager=True,
                     additional_config={
                         "ascend_scheduler_config": {
                             "enabled": True,