[NPU] Fix failed test cases in pr‑test‑npu and improve execution efficiency (#38112)

Co-authored-by: Even Zhou <even.y.zhou@outlook.com>
Co-authored-by: sglang-npu-bot <sglangnpu@163.com>

.github/workflows/pr-test-npu.yml

@@ -227,7 +227,7 @@ jobs:
           if-no-files-found: ignore
           retention-days: 7
 
-  multimodal-gen-test-2-npu-a3:
+  multimodal-gen-test-4-npu-a3:
     needs: [check-changes, pr-gate, set-image-config, base-a-test-1-npu-a2]
     if: ${{ !failure() && !cancelled() && needs.check-changes.outputs.multimodal_gen == 'true' }}
     runs-on: linux-aarch64-a3-800t-4
@@ -297,7 +297,7 @@ jobs:
     if: ${{ !failure() && !cancelled() && needs.check-changes.outputs.main_package == 'true' }}
     uses: ./.github/workflows/_npu-single-node-test-stage.yml
     with:
-      runner: linux-aarch64-a3-800t-2
+      runner: linux-aarch64-a3-2-
       test_type: 'accuracy'
       test_suite: base-c-test-acc-2-npu-a3
       image: ${{ needs.set-image-config.outputs.CANN_image_a3 }}
@@ -311,7 +311,7 @@ jobs:
     if: ${{ !failure() && !cancelled() && needs.check-changes.outputs.main_package == 'true' }}
     uses: ./.github/workflows/_npu-single-node-test-stage.yml
     with:
-      runner: linux-aarch64-a3-800t-16
+      runner: linux-aarch64-a3-16-
       test_type: 'accuracy'
       test_suite: base-c-test-acc-16-npu-a3
       image: ${{ needs.set-image-config.outputs.CANN_image_a3 }}
@@ -359,7 +359,7 @@ jobs:
         base-b-test-16-npu-a3,
 
         multimodal-gen-test-1-npu-a3,
-        multimodal-gen-test-2-npu-a3,
+        multimodal-gen-test-4-npu-a3,
 
         base-c-test-acc-2-npu-a3,
         base-c-test-acc-16-npu-a3,