fix: skip rows with None coordinates to prevent GeoJSON errors
Some rows in the NocoDB table contain NULL coordinates. Folium/GeoJSON breaks when encountering None values.
This MR proposes skipping rows with missing lat/lng.
Old: features.append(geojson.Feature(geometry=geojson.Point((row['Longitud'],row['Latitud'])), properties=properties))
New: if row['Longitud'] is None or row['Latitud'] is None: continue
features.append(geojson.Feature( geometry=geojson.Point((row['Longitud'], row['Latitud'])), properties=properties))