Fix BCC if-else slot loading

Not all slots were being loaded.

Thanks jazpersona !
https://projectpokemon.org/home/forums/topic/57375-pkhex-new-update-legality-errors-contribution-page/?do=findComment&comment=267494

PKHeX.Core/Legality/Areas/EncounterArea2.cs

@@ -35,7 +35,7 @@ private EncounterArea2(byte[] data, GameVersion game) : base(game)
             var type = (Type = (SlotType)data[2]) & (SlotType)0xF;
             var rate = data[3];
 
-            if (type > SlotType.Surf) // Not Grass/Surf
+            if (type is > SlotType.Surf and not SlotType.BugContest) // Not Grass/Surf
             {
                 const int size = 5;
                 int count = (data.Length - 4) / size;