[Test] Add accuracy test for qwen3-8b-w8a8 (#3799)

### What this PR does / why we need it?
Add accuracy test for qwen3-8b-w8a8

- vLLM version: v0.11.0rc3
- vLLM main:
c9461e05a4

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

.github/workflows/accuracy_test.yaml

@@ -59,6 +59,8 @@ jobs:
             model_name: DeepSeek-V2-Lite
           - runner: a2-4
             model_name: Qwen3-Next-80B-A3B-Instruct
+          - runner: a2-1  
+            model_name: Qwen3-8B-W8A8
       fail-fast: false
     # test will be triggered when tag 'accuracy-test' & 'ready-for-test'
     if:  >-