[export.asb.breeding] Ensure only 1 fertilized egg is possible

[VolatilePulse]

e5efee0 attempts to address this is a "good enough" solution.

During testing, a species is able to drop any one item from it's array of FertilizedEggItemsToSpawn, even it wouldn't spawn the same species. For example, the Ark: Eternal Spectral Rabbit has 77 different fertilized eggs, none of which coincide with that species.

The proper fix for this appears to be to parse all PrimalItems and detect fertilized egg information for each species for ASB. Since ASB can only handle one egg item at the moment for incubation data, we opted to choose the highest weighted fertilized egg.