[TEST]add a qwen3-30b acc case with mooncake mempool (#6244)

### What this PR does / why we need it?
This PR adds a case of qwen3-30b w8a8 with mooncake mempool, we need to
test it regual
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
by running the test
- vLLM version: v0.14.1
- vLLM main:
d68209402d

Signed-off-by: jiangyunfan1 <jiangyunfan1@h-partners.com>

.github/workflows/schedule_nightly_test_a3.yaml

@@ -165,6 +165,9 @@ jobs:
           - name: deepseek3_2-w8a8
             os: linux-aarch64-a3-16
             tests: tests/e2e/nightly/single_node/models/test_deepseek_v3_2_w8a8.py
+          - name: qwen3-30b-acc
+            os: linux-aarch64-a3-4
+            tests: tests/e2e/weekly/single_node/models/test_qwen3_30b_acc.py
     uses: ./.github/workflows/_e2e_nightly_single_node.yaml
     with:
       runner: ${{ matrix.test_config.os }}