[core]vllm-ascend support msMonitor tool (#3123)

### What this PR does / why we need it?
vllm-ascend support [msMonitor
](https://gitcode.com/Ascend/mstt/tree/master/msmonitor)tool to collect
performance of vllm-ascend

### Does this PR introduce _any_ user-facing change?
1.add env MSMONITOR_USE_DAEMON；
2.user cann enable msMonitor tool by setting MSMONITOR_USE_DAEMON=1
before run vllm-ascend model；
3.MSMONITOR_USE_DAEMON and VLLM_TORCH_PROFILER_DIR cannot both set

### How was this patch tested?
1.run vllm-ascend model while not set MSMONITOR_USE_DAEMON=1 or set
MSMONITOR_USE_DAEMON=0, model will run successfully;
2.run vllm-ascend model while set MSMONITOR_USE_DAEMON=1, run msMonitor
tool to collect profile data;
3.run vllm-ascend model while set MSMONITOR_USE_DAEMON=1 and
VLLM_TORCH_PROFILER_DIR, will raise error

- vLLM version: v0.10.2
- vLLM main:
f225ea7dd9

Signed-off-by: mei-feiyao <1332490378@qq.com>

tests/ut/worker/test_worker_v1.py

@@ -355,6 +355,28 @@ class TestNPUWorker(TestBase):
 
             self.assertIn("Profiler is not enabled", str(cm.exception))
 
+    @patch("vllm_ascend.worker.worker_v1.envs_vllm")
+    @patch("vllm_ascend.worker.worker_v1.envs_ascend")
+    def test_profile_and_msmonitor_both_enabled_raises_error(
+            self, mock_envs_vllm, mock_envs_ascend):
+        """Test profile method raises exception when both profiler and msmonitor are enabled"""
+        from vllm_ascend.worker.worker_v1 import NPUWorker
+
+        mock_envs_vllm.VLLM_TORCH_PROFILER_DIR = "/path/to/traces"
+        mock_envs_ascend.MSMONITOR_USE_DAEMON = 1
+
+        # Create worker mock
+        with patch.object(NPUWorker, "__init__", lambda x, **kwargs: None):
+            worker = NPUWorker()
+
+            # Test should raise exception
+            with self.assertRaises(RuntimeError) as cm:
+                _ = worker._init_profiler()
+
+            self.assertIn(
+                "MSMONITOR_USE_DAEMON and VLLM_TORCH_PROFILER_DIR cannot be both set at the same time.",
+                str(cm.exception))
+
     def test_lora_methods(self):
         """Test LoRA related methods"""
         from vllm_ascend.worker.worker_v1 import NPUWorker