[CI][Bugfix] Quickfix for DPMetaData (#3234)

### What this PR does / why we need it?
Fix `dpmetadata` and `Qwen3MoeSparseMoeBlock` break introduced by
26a7a33b88 (diff-c1550d0a38469d039370567d8981969530cbfffc7302cd1778e7c2c8a9322dea)

NOTE: we maintain a different sp in vllm-ascend with vllm, thus we can
just use `cu_tokens_across_sp(1)` as `cu_tokens_across_dp_cpu`

close https://github.com/vllm-project/vllm-ascend/issues/3236,
https://github.com/vllm-project/vllm-ascend/issues/3239
### Does this PR introduce _any_ user-facing change?

### How was this patch tested?


- vLLM version: v0.10.2
- vLLM main:
https://github.com/vllm-project/vllm/commit/releases/v0.11.0

---------

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

tests/ut/ops/test_fused_moe_prepare_and_finalize.py

@@ -8,6 +8,7 @@ from vllm_ascend.ops.moe.fused_moe_prepare_and_finalize import (
     FusedMoEPrepareAndFinalizeWithAll2All,
     FusedMoEPrepareAndFinalizeWithAllGather, FusedMoEPrepareAndFinalizeWithMC2,
     FusedMoEPrepareAndFinalizeWithNaiveMulticast)
+from vllm_ascend.utils import vllm_version_is
 
 
 class TestFusedMoEPrepareAndFinalize(unittest.TestCase):
@@ -230,8 +231,12 @@ class TestFusedMoEPrepareAndFinalize(unittest.TestCase):
                                               mock_get_dp_group):
         # Mock forward context with DP metadata
         mock_context = MagicMock()
-        mock_context.dp_metadata.cu_tokens_across_dp_cpu = torch.tensor(
-            [2, 5, 7])
+        if vllm_version_is("0.10.2"):
+            mock_context.dp_metadata.cu_tokens_across_dp_cpu = torch.tensor(
+                [2, 5, 7])
+        else:
+            mock_context.dp_metadata.cu_tokens_across_sp.return_value = torch.tensor(
+                [2, 5, 7])
         mock_get_forward_context.return_value = mock_context
 
         # Setup DP group mock