fix maker monster crystal level calculation

[nutnnut]

Description

Maker monster crystal level calculation is off by 1 because the level get -1 twice

itemid = getCrystalForLevel(LifeFactory.getMonsterLevel(dropperid) - 1);

private static int getCrystalForLevel(int level) {
        int range = (level - 1) / 10;

        if (range < 5) {
            return ItemId.BASIC_MONSTER_CRYSTAL_1;
        } else if (range > 11) {
            return ItemId.ADVANCED_MONSTER_CRYSTAL_3;
        } else {
            return switch (range) {
                case 5 -> ItemId.BASIC_MONSTER_CRYSTAL_2;
                case 6 -> ItemId.BASIC_MONSTER_CRYSTAL_3;
                case 7 -> ItemId.INTERMEDIATE_MONSTER_CRYSTAL_1;
                case 8 -> ItemId.INTERMEDIATE_MONSTER_CRYSTAL_2;
                case 9 -> ItemId.INTERMEDIATE_MONSTER_CRYSTAL_3;
                case 10 -> ItemId.ADVANCED_MONSTER_CRYSTAL_1;
                default -> ItemId.ADVANCED_MONSTER_CRYSTAL_2;
            };
        }
    }

4260006 - Advanced Monster Crystal 1 - A Monster Crystal that was formed by combining the droppings of monsters on level 101 ~ 110.
4260007 - Advanced Monster Crystal 2 - A Monster Crystal that was formed by combining the droppings of monsters on level 111 ~ 120.

lv 111 item will get Adv Crystal 1
After fix should get Adv Crystal 2

Checklist before requesting a review

• I have performed a self-review of my code
• I have tested my changes
• I have added unit tests that prove my changes work

Screenshots