[Bugfix] Qwen3-next with --hf-overrides \{\"num_hidden_layers\":8\} (#30433)

Signed-off-by: Chen Zhang <zhangch99@outlook.com>

vllm/model_executor/models/qwen3_next.py

@@ -1092,6 +1092,8 @@ class Qwen3NextModel(nn.Module):
                         name.endswith(".bias") or name.endswith("_bias")
                     ) and name not in params_dict:
                         continue
+                    if name not in params_dict:
+                        continue
                     param = params_dict[name]
                     weight_loader = param.weight_loader
                     weight_loader(
@@ -1108,6 +1110,11 @@ class Qwen3NextModel(nn.Module):
                         continue
                     if is_pp_missing_parameter(name, self):
                         continue
+                    if name not in params_dict:
+                        logger.warning_once(
+                            f"Parameter {name} not found in params_dict, skip loading"
+                        )
+                        continue
                     param = params_dict[name]
                     weight_loader = getattr(
                         param, "weight_loader", default_weight_loader