Mob AI Tweaks

-Fixed Ender Dragon burning items when enraged.

-Fixed phantoms spawned from spawners not being able to attack at all.

-Added a config to separate End Crystal reworks from Ender Dragon reworks (ender_dragon_healing_rework). If only End Crystal Rework is enabled, only the healing and immunity phases will be present during the fight. If only Ender Dragon rework is enabled, only the buffed attacks are included in the fight.

-Added a config to determine how big phantoms need to be in order to become hostile to players again (phantoms_become_hostile_size).