Code tweaks...

A couple of code tweaks.

Fixed Charger suddenly gaining the ability to steer after grabbing a jumping survivor, the Charger can only grab grounded Survivors now.

Buffed Charger damage:

EASY: 5 == 5 (UNCHANGED)
NORMAL: 5 --> 10
ADVANCED: 10 --> 15
EXPERT: 20 == 20 (UNCHANGED)

This is essentially a difficulty increasing script, now with more checks for the behavior, he'll do it less often, therefore it needs to be more punishing once it happens.

Grabbing looks strange on Survivors that are about to be incapped, it sometimes creates animation oddities.

Charger no longer grabs Survivors at about 40 or less HP, essentially yellow HP survivors; i'll likely buff his overall grabbing damage in compensation.

The Charger's grabbing range has been increased, i noticed that it was a rare occurence to get grabbed on my game at least, my AI enhanced bots were always managing to evade Chargers even at high stress scenarios.