fix reserve gifts endpoint

backend/app/crud/gift.py

@@ -92,7 +92,7 @@ class CRUDGiftItem(CRUDBase[GiftItem, GiftItemCreate, GiftItemUpdate]):
         """Reserve a gift for a guest with specified quantity"""
 
         gift: GiftItem = self.get(db, gift_id)
-        if gift and gift.status == GiftStatus.AVAILABLE:
+        if gift and gift.quantity_received < gift.quantity_requested:
             # Add to the association table using the SQLAlchemy Core Table directly
             from app.models.guest import guest_gifts