Cannot import Workflow if a node is missing

### Expected Behavior

Before the update, everything worked fine.

### Actual Behavior

When i import a workflow with a missing node the popup shows up but the workflow is not loaded. Dragging it or opening the workflow does the same thing.

### Steps to Reproduce

Just update comfyui. And i imported some workflows.

### Debug Logs

```powershell
No specific logs or error shown in the terminal
```

### Other

_No response_