CustomServer: re-add missing Archipelago to data package (Archipelago…

…MW#3341)

WebHostLib/customserver.py

@@ -106,7 +106,7 @@ def load(self, room_id: int):
         static_gamespackage = self.gamespackage  # this is shared across all rooms
         static_item_name_groups = self.item_name_groups
         static_location_name_groups = self.location_name_groups
-        self.gamespackage = {}  # this may be modified by _load
+        self.gamespackage = {"Archipelago": static_gamespackage["Archipelago"]}  # this may be modified by _load
         self.item_name_groups = {}
         self.location_name_groups = {}