meteo_imgw not working - corrupted headers

New header files updated recently by IMGW do not have proper encoding and thus a temporary fix is needed to handle similar cases to this one:

<img width="991" height="759" alt="Image" src="https://github.com/user-attachments/assets/e7ae5bc3-2ea2-4813-b5dd-8a11daa2fc19" />