[CI/UT] Fix disaggregated prefill ci (#1313)

### What this PR does / why we need it?
Use eager mode to run disaggregated prefill ci

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

### How was this patch tested?
CI passed with new existing test.

---------

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

.github/workflows/vllm_ascend_test_pd.yaml

@@ -41,7 +41,11 @@ jobs:
     if: ${{ contains(github.event.pull_request.labels.*.name, 'pd-test') && contains(github.event.pull_request.labels.*.name, 'ready-for-test') || github.event_name == 'schedule' }}
     strategy:
       matrix:
-        vllm_verison: [main, v0.9.1]
+        vllm_verison: [
+            # revert me when V1 disaggregation prefill is merged in main
+            # main, 
+            v0.9.1
+          ]
     name: vLLM Ascend prefilling decoding disaggregation test
     runs-on: linux-arm64-npu-static-8