[Test] Add nightly test for DeepSeek-V3.2-Exp (#3908)

### What this PR does / why we need it?
Add nightly test for DeepSeek-V3.2-Exp


### How was this patch tested?
test action：

https://github.com/vllm-project/vllm-ascend/actions/runs/19156153634/job/54757008557?pr=3908


- vLLM version: v0.11.0
- vLLM main:
83f478bb19

---------

Signed-off-by: hfadzxy <starmoon_zhang@163.com>

.github/workflows/_e2e_nightly_single_node.yaml

@@ -33,6 +33,9 @@ on:
       tests:
         required: true
         type: string
+      name:
+        required: false
+        type: string
 
 # Bash shells do not use ~/.profile or ~/.bashrc so these shells need to be explicitly
 # declared as "shell: bash -el {0}" on steps that need to be properly activated.
@@ -94,6 +97,19 @@ jobs:
           pip install -r requirements-dev.txt
           pip install -v -e .
 
+      - name: Install custom-ops (for DeepSeek-V3.2-Exp)
+        if: ${{ inputs.name == 'deepseek3_2-exp-w8a8' }}
+        shell: bash -l {0}
+        run: |
+          wget https://vllm-ascend.obs.cn-north-4.myhuaweicloud.com/vllm-ascend/a3/CANN-custom_ops-sfa-linux.aarch64.run
+          chmod +x ./CANN-custom_ops-sfa-linux.aarch64.run
+          ./CANN-custom_ops-sfa-linux.aarch64.run --quiet
+          export ASCEND_CUSTOM_OPP_PATH=/usr/local/Ascend/ascend-toolkit/latest/opp/vendors/customize:${ASCEND_CUSTOM_OPP_PATH}
+          export LD_LIBRARY_PATH=/usr/local/Ascend/ascend-toolkit/latest/opp/vendors/customize/op_api/lib/:${LD_LIBRARY_PATH}
+          wget https://vllm-ascend.obs.cn-north-4.myhuaweicloud.com/vllm-ascend/a3/custom_ops-1.0-cp311-cp311-linux_aarch64.whl
+          pip install custom_ops-1.0-cp311-cp311-linux_aarch64.whl
+          . /usr/local/Ascend/ascend-toolkit/set_env.sh
+
       - name: Checkout aisbench repo and Install aisbench
         run: |
           git clone https://gitee.com/aisbench/benchmark.git