Apply OT mismatch deferral to gen2

Check the OT length for the deferral

other encounters are more permissive than trades, hence why we defer
unless we know for certain. Same OTs are possible, except for the
too-long ones!

Closes #2338 , thanks @WEERSOQUEER !

PKHeX.Core/Legality/Encounters/Generator/EncounterGenerator.cs

@@ -147,7 +147,8 @@ private static IEnumerable<IEncounterable> GenerateRawEncounters12(PKM pkm, Game
             var deferred = new List<IEncounterable>();
             foreach (var t in GetValidEncounterTrades(pkm, vs, game))
             {
-                if (pkm.Format >= 7 && (t.Generation == 2 || t.GetOT(pkm.Language) != pkm.OT_Name)) // ot length collision
+                // some OTs are longer than the keyboard entry; don't defer these
+                if (pkm.Format >= 7 && pkm.OT_Name.Length <= (pkm.Japanese || pkm.Korean ? 5 : 7))
                 {
                     deferred.Add(t);
                     continue;