Constantly and permanent loss of open and saved workflows

### 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

The saved workflows to be persisted across custom nodes update/installation

### Actual Behavior

For the 3rd time I've lost all my saved workflows in ComfyUI after updating/installing new custom nodes and the consequent UI reload after restart, losing multiple hours of work every time.

### Steps to Reproduce

1. Create a new workflow
2. Save it
3. Add/Update custom nodes
4. Restart Server
5. Confirm the reload of the UI

more often than not, the saved workflow will be gone and and old generic workflow will be there and the old ones (even when multiple tabs are open) are no where to be seen again.

### Debug Logs

```powershell
-
```

### Other

This is a show-stopper for developing new workflow, as one can't be expected to export workflows every 2 minutes. At least the old UI from years ago would on save always offer you a download and no other option to save.