Core/AreaTriggers: Handle exit areatrigger on player map change

Port From (https://github.com/TrinityCore/TrinityCore/commit/26fc14419142e3188370035ce4144cdb125bec05)

Source/Game/Entities/Player/Player.cs

@@ -4795,6 +4795,9 @@ namespace Game.Entities
 
             pet.CombatStop();
 
+            // exit areatriggers before saving to remove auras applied by them
+            pet.ExitAllAreaTriggers();
+
             // only if current pet in slot
             pet.SavePetToDB(mode);