[BugFix] Fix glm4_moe_mtp load weights bug (#28805)

Signed-off-by: wuyaoxuehun <798143193@qq.com>

Author: wuyaoxuehun

vllm/model_executor/models/glm4_moe_mtp.py

@@ -256,13 +256,12 @@ def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]) -> set[str]:
 
         params_dict = dict(self.named_parameters())
         loaded_params: set[str] = set()
-        spec_layer = self.model.mtp_start_layer_idx
         for name, loaded_weight in weights:
             if name == "lm_head.weight":
-                name = f"model.layers.{spec_layer}.shard_head.head.weight"
+                spec_layer = self.model.mtp_start_layer_idx
+                name = f"model.layers.{spec_layer}.shared_head.head.weight"
             elif name == "model.embed_tokens.weight":
-                # This name is same with local model, rewriting is not needed.
-                pass
+                spec_layer = self.model.mtp_start_layer_idx
             else:
                 spec_layer = get_spec_layer_idx_from_weight_name(self.config, name)
                 if spec_layer is None: