nests contained withing other nests aren't considered #58
Description
i found this big nest here that contains a separate big nest. Fletchling successfully detects the big nest as Misdreavus, but fails to detect the smaller park as a Blitzle nest and merges them together.
Looking at OSM, the small park is perfectly valid and marked as outer on the big park. The smaller park shows up in the database, but is discarded as overlap.
This screenshot is showing all nests, Misdreavus and Blitzle. The small park also has some Misdreavus spawns, but they could be a fluke; there's a few spawning outside of it, too.
Big park on OSM: https://www.openstreetmap.org/relation/8103463
Small park on OSM: https://www.openstreetmap.org/relation/168566