[Refactor] Adapt deepseek-v3.2 to vllm 0.11.0 (#3432)

### What this PR does / why we need it?
Adapt deepseek-v3.2 to vllm 0.11.0, removing the useless patch.

The final goal is to remove all the patches and align the code arch to
vllm, thus we need to do the following work in next prs.
TODO:
- [x] remove patch on attention spec
- [ ] refactor the kvcache creation logic

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
1. CI passed with existing test.
2. Test pass with deepseek-v3.2-exp


- vLLM version: v0.11.0rc3
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

Signed-off-by: MengqingCao <cmq0113@163.com>

vllm_ascend/worker/worker_v1.py

@@ -43,7 +43,7 @@ from vllm.v1.outputs import (EMPTY_MODEL_RUNNER_OUTPUT, AsyncModelRunnerOutput,
 from vllm.v1.worker.worker_base import WorkerBase
 
 import vllm_ascend.envs as envs_ascend
-from vllm_ascend.ascend_config import get_ascend_config, init_ascend_config
+from vllm_ascend.ascend_config import init_ascend_config
 from vllm_ascend.device_allocator.camem import CaMemAllocator
 from vllm_ascend.distributed.parallel_state import init_ascend_model_parallel
 from vllm_ascend.platform import NPUPlatform
@@ -88,7 +88,11 @@ class NPUWorker(WorkerBase):
         # init ascend config and soc version
         init_ascend_config(vllm_config)
         init_ascend_soc_version()
-        if get_ascend_config().use_sfa:
+        use_sparse = False
+        if vllm_config.model_config is not None:
+            use_sparse = hasattr(vllm_config.model_config.hf_config,
+                                 "index_topk")
+        if use_sparse:
             # Direct import instead of using try_register_lib to ensure proper error handling when
             # custom_ops is necessary but not available (e.g., in DeepSeek v3.2 deployments)
             # yapf: disable