The gallery is cleared when the server is shut down / or possibly when the connection is lost.

### Expected Behavior

The state of the gallery should remain exactly as it is. Even if the content cannot be accessed because it is behind some API request that will not go through, the thumbnails must remain and the state of the gallery must be fully restored to its usable state if the connection can be re-established without reloading the page.

### Actual Behavior

The entire state of the gallery is wiped out, interrupting the user's work. They must now open directories instead to continue their work.

### Steps to Reproduce

1. Execute a workflow
2. Close ComfyUI
3. The gallery is empty.

### Debug Logs

```powershell
Unnecessary
```

### Other

_No response_