Move Loved Guest Difficulties into the Loved Beatmaps Category

[syzyxy]

With the recent implementation of the collaboration difficulty assignation feature, it would be more appropriate to include all Loved Guest Difficulties within the Loved Beatmaps category. This change ensures that GDs are not excluded from visibility, as the guest difficulty participation category primarily focuses on ranked content.

Additionally, this adjustment aligns with the fact that the Beatmaps category isn’t restricted to beatmap sets alone. Consolidating GDs into Loved Beatmaps would also provide a clearer representation of the total number of Loved beatmaps a user has, including contributions through guest difficulties and collaborations, as well as giving a more accurate number of ranked GDs in the category.