OSM relation is incorrectly converted to geojson.

[GabrielBruno24]

When running the 1_downloadOsmDataToFiles task on a polygon that contains the relation https://www.openstreetmap.org/relation/10627518, the osmToGeojson() function will convert its members to a geojson, but not the relation itself. This creates issue in the 2_importAndProcessOsmDataToFiles task, as the relation will be present in the raw osm file but not the geojson file. By contrast, this other relation (https://www.openstreetmap.org/relation/197567) is converted correctly into geojson without its members being converted.

We should figure out why osmToGeojson() creates such a discrepancy, and fix it.