When STD or NATT survey is validated, an empty row is created for non-birds sections

[mathieuLU]

Discovered when extracting the data for STD.
several rows in the extract that say :
ERROR : No ART for mammals /

these lines are empty. Looks like this in BC and in the database

Manual fix to remove all of them (exists in Natt as well) . I guess they can exist as well for amphibians or other non-mandatory animals fields

db.output.updateMany(
{
	"data.mammalObservations.speciesMammals.listId":"", 
	"data.mammalObservations.individualCount":0, 
	"data.mammalObservations":{$size:1}
},
{
	$set:{
		"data.mammalObservations":[]
	}
}
)

My guess is that the pre-created line when entering the form stays when validating => empty line in the end.

Should be possible to remove empty line when validating ?