`self_resurrect` now properly not copied by clones.

Fixes a typo in Actor.clone_nodes that governs which fields are not copied by actor clones (Multiply, Inner Demons, etc.). self_resurrect, which is used by liches and some other enemies, had a typo (self_ressurect), preventing this behavior.

The bug was most notable on clones of The Master, who currently spams his death dialogue (self_resurrect_chat) when his clones die, leading to this:

This MR is save-safe, although already existing clones will have their illegal self_resurrect field.