[Bugfix] Add missing 'is_internal_router' attribute to FusedMoEWithLoRA (vllm-project#27351)

Signed-off-by: Jee Jee Li <pandaleefree@gmail.com>

Author: jeejeelee

vllm/lora/layers/fused_moe.py

@@ -405,3 +405,7 @@ def _shared_experts(self):
  @property
  def quant_method(self):
  return self.base_layer.quant_method
+
+ @property
+ def is_internal_router(self) -> bool:
+ return self.base_layer.is_internal_router