asyncio.run() cannot be called from a running event loop

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

run a async function

### Actual Behavior

RuntimeError: asyncio.run() cannot be called from a running event loop

### Steps to Reproduce

async def dosomething()
print("hello")
await asyncio.sleep(1)
print("world")

FUNCTION = "node_function"
def node_function(self, string,):
asyncio.run(dosomething())
return ("",)

### Debug Logs

```powershell
File "C:\Users\MyPC\AppData\Local\Programs\Python\Python312\Lib\asyncio\runners.py", line 191, in run
raise RuntimeError(
RuntimeError: asyncio.run() cannot be called from a running event loop
```

### Other

_No response_