Fix platinum altforms not having formcount set

fix by hex editing the manually altered field in the personal table so
that it matches HGSS
thanks @sora10pls !

fix unused writeback location for saving tmhm data

PKHeX.Core/PersonalInfo/PersonalInfoG4.cs

@@ -21,8 +21,7 @@ namespace PKHeX.Core
         }
         public override byte[] Write()
         {
-            SetBits(TMHM).CopyTo(Data, 0x28);
-            // setBits(TypeTutors).CopyTo(Data, 0x38);
+            SetBits(TMHM).CopyTo(Data, 0x1C);
             return Data;
         }