Fix Magiclysm json errors

[jbytheway]

Summary

SUMMARY: Bugfixes "Fix assorted minor Magiclysm json errors"

Purpose of change

To fix json errors brought to light by the stricter json error checking I have locally (not yet PRed).

Describe the solution

The same as #34455, except for Magiclysm rather than the core game.

Describe alternatives you've considered

One of the things being attempted here which doesn't work is to give a melee weapon electrical damage. It looks like melee weapon damage ought to by lifted into a damage_instance, to match ranged damage and monster damage.

Additional context

I tackled this mod first because it's tested in CI.

[KorGgenT]

a note about the electrical damage, it'll be possible eventually as my enchantment project progresses.

[foulman]

Yeah, that's on me, I was a lot more novice at the time and didn't know that wouldn't work.
I'll re-add it once the enchantment is going.