Can't make "control after generated" as input in a subgraph

### 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

Drag or make "control after generated" as input in a subgraph

### Actual Behavior

Can't drag or make "control after generated" as input in a subgraph

### Steps to Reproduce

Create a subgraph

### Debug Logs

```powershell
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```

### Other