How to handle flights from Asia/Oceania

This command for Air New Zealand flight 6: 

```bash
pyfr24 smart-export --flight NZ6 --date 2025-08-02 --timezone "America/New_York" --background esri-satellite
```

Returns an odd map because of the International Date Line: 

<img width="3472" height="2673" alt="Image" src="https://github.com/user-attachments/assets/17d09d7c-cff5-4347-a8ce-64ae68d30bdd" />

