[BugFix] Add embed_input_ids method to make QWenLMHeadModel a vllm model (#30674)

Signed-off-by: root <iwzbi@zju.edu.cn>
Co-authored-by: root <iwzbi@zju.edu.cn>

vllm/model_executor/models/qwen.py

@@ -281,6 +281,9 @@ class QWenBaseModel(nn.Module):
             self.transformer.make_empty_intermediate_tensors
         )
 
+    def embed_input_ids(self, input_ids: torch.Tensor) -> torch.Tensor:
+        return self.transformer.wte(input_ids)
+
     def compute_logits(
         self,
         hidden_states: torch.Tensor,