fix not await for load extra nodes

Author: chengxi

comfyui_to_python_utils.py

@@ -24,7 +24,7 @@ def import_custom_nodes() -> None:
  execution.PromptQueue(server_instance)
 
  # Initializing custom nodes
- init_extra_nodes()
+ asyncio.run(init_extra_nodes())
 
 
 def find_path(name: str, path: str = None) -> str: