Make pets unaffected by Battleship's speed

Make pets upgraded by Kenta retain the original owner's speed even while mounted on Corsair's Battleship.

Pets that have been upgraded by Kenta after completing the quest "Kenta's Advice" will match the owner's speed. This is a nice buff that allows them to pick up a few more items than normal when grinding. When Corsairs mount Battleship, upgraded pets will actually slow down to match Battleship's speed (even though the speed and jump stats in character info are unaffected while mounted on Battleship). I'm not 100% sure if un-upgraded pets also alter their speed to match Battleship. At least, make pets retain original 100% speed even while mounted on Battleship.