[Bugfix] Fix XliteModelRunner init failed when aclgraph is enabled (#5899)

### What this PR does / why we need it?
Fix XliteModelRunner init failed when aclgraph is enabled. Ensure
function graph_capture of vllm.v1.worker.gpu_model_runner is replaced.

- vLLM version: v0.13.0
- vLLM main:
bde38c11df

Signed-off-by: changdawei1 <changdawei3@huawei.com>

vllm_ascend/worker/model_runner_v1.py

@@ -2992,10 +2992,16 @@ class NPUModelRunner(GPUModelRunner):
                 set_draft_graph_params(self.cudagraph_batch_sizes)
 
     def capture_model(self) -> None:
-        parent_module_name = self.__class__.__base__.__module__
+        gpu_model_runner_cls = next((cls for cls in self.__class__.__mro__
+                                     if cls.__name__ == "GPUModelRunner"),
+                                    None)
+        if gpu_model_runner_cls is None:
+            raise TypeError("Could not find GPUModelRunner in the MRO. "
+                            "The class hierarchy may have changed.")
+        parent_module_name = gpu_model_runner_cls.__module__
         with _torch_cuda_wrapper(), _replace_gpu_model_runner_function_wrapper(
                 parent_module_name):
-            super().capture_model()
+            GPUModelRunner.capture_model(self)
 
     def _prepare_multimodal_fields(self):
         """