Fix one punch man not killing some mobs

[kacimiamine]

It looks like there are checks after for the absorption, armor, resistance etc... that decreases the damage amount, so using getHealth() won't kill the mobs with those modifiers (wither, zombie etc...)

The best fix it to set the damage to the max value possible `Float.MAX_VALUE. This is more appropriate and also safe since we have a check after the damage:

if (Float.isNaN(damage) || Float.isInfinite(damage)) {
    damage = Float.MAX_VALUE;
}

Fixes #1811

[momo-OwO-qwq]

good job bro 👍