fix uncompatible between fc1 and non-sp-padding (vllm-project#7643)

cherry pick vllm-project#7614
### What this PR does / why we need it?
fix uncompatible between fc1 and non-sp-padding
After PR
[non-sp-padding](vllm-project#7297),
kimi2.5 open flashcomm1 will raise an error : The expanded size of the
tensor do not match the existing size at non-singleton dimension 0.

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.18.0
- vLLM-Ascend main: 9976e68

Signed-off-by: Wangbei25 <wangbei41@huawie.com>
Co-authored-by: Wangbei25 <wangbei41@huawie.com>

Author: Wangbei25

vllm_ascend/worker/model_runner_v1.py

@@ -1976,7 +1976,7 @@ def dispatch_cudagraph(num_tokens, disable_full=False, valid_modes=None):
             _, num_tokens_across_dp, synced_cudagraph_mode = self._sync_batch_across_dp(
                 num_tokens_padded=num_tokens_padded,
                 cudagraph_mode=cudagraph_mode.value,
-                allow_dp_padding=cudagraph_mode != CUDAGraphMode.NONE,
+                allow_dp_padding=(cudagraph_mode != CUDAGraphMode.NONE) or enable_sp(self.vllm_config),
             )
 
             # Extract DP padding if there is any