[v0.11.0-dev][CI] Fix ngram lacking of input arg dummy_compute_logits error (#4648)

### What this PR does / why we need it?
Fix ngram lacking of input arg `dummy_compute_logits` error

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

---------

Signed-off-by: MengqingCao <[email protected]>

Author: MengqingCao

vllm_ascend/spec_decode/interface.py

@@ -35,7 +35,8 @@ def dummy_run(self,
                   num_reqs: int = 0,
                   num_tokens_across_dp: Optional[torch.Tensor] = None,
                   aclgraph_runtime_mode: CUDAGraphMode = CUDAGraphMode.NONE,
-                  batch_descriptor=None):
+                  batch_descriptor=None,
+                  dummy_compute_logits=lambda hidden_states: None):
         """Called by dummy_run in modle_runner"""
         raise NotImplementedError
 

vllm_ascend/spec_decode/ngram_proposer.py

@@ -26,7 +26,8 @@ def dummy_run(self,
                   num_reqs=None,
                   num_tokens_across_dp=None,
                   aclgraph_runtime_mode: CUDAGraphMode = CUDAGraphMode.NONE,
-                  batch_descriptor=None):
+                  batch_descriptor=None,
+                  dummy_compute_logits=lambda hidden_states: None):
         pass
 
     def generate_token_ids(self,