Ebird has the common name for this hummingbird as:
Blue-throated Goldentail
Are you asking whether that name is correct? Wikipedia uses that name, too: Blue-throated goldentail - Wikipedia.
Or are you asking why iNaturalist uses " Blue-throated Sapphire" as the common name?
Questions regarding the name of a specific taxon in iNaturalist should be addressed by going to the taxon page for that taxon and, under Curation, select Flag for Curation and describe the issue there, so that iNaturalist curators can be notified and attempt to resolve it.
Closing this topic so that discussion can be focused on a taxon flag.