Necromancer should only spawn 7 zombies

Currently necromancer spawns 7 zombies per player. Dwu shared script set dated of 2016 which indicates how it should be the 7 zombies tied to npc rather than to player.

In the video (https://m.youtube.com/watch?v=YJX7RJkvYek) posted by Jlun corroborates the earlier behavior to some degree. Would suggest, however that the 7 zombies was global attribute checked in runescript. Both versions likely are accepted.