Mutagenic toxins seem to be non-functional

[chaosvolt]

Describe the bug

Mutagenic toxins no longer build up properly, with or without Simplified Nutrition.

Steps To Reproduce

1. Create a world.
2. Eat several units of cooked mutant meat, lard, whatever you prefer.
3. Wait 24 hours at a time, checking after each wait and adjusting kcal/thirst/fatigue so you won't die.
4. Notice that mutagenic toxins never seems to go up.

Expected behavior

Mutagenic toxins to build up as expected after binging on contaminated food.

Screenshots

Versions and configuration

- OS: Windows
    - OS Version: 10.0 2004
- Game Version: 92681fe [64-bit]
- Graphics Version: Tiles
- Game Language:  []
- Mods loaded: [
    Bright Nights [dda],
    Elevated bridges [elevated_bridges],
    No Fungal Monsters [No_Fungi],
    Disable NPC Needs [no_npc_food],
    Manual Bionic Installation [manualbionicinstall]
]

Also tested in a compiled test build:

- OS: Windows
    - OS Version: 10.0 2004
- Game Version: 92681fe43f-dirty [64-bit]
- Graphics Version: Tiles
- Game Language:  []
- Mods loaded: [
    Bright Nights [dda],
    Disable NPC Needs [no_npc_food],
    Elevated bridges [elevated_bridges]
]

Additional context

[KheirFerrum]

Also, seems like this broke just after the last update on 6th April, since I had a working mutagenic system then when I updated from 1835 to 1910 via Catapult. I still have a working version of it on my computer right now, but if I have Catapult download an 1910 from scratch Mutagenic Toxins don't work.

[chaosvolt]

So evidently, for some reason if you pick creating character via a template, even if it's just "last character used" it'll suddenly work, as does save and load, as found out in the BN discord:

So evidently the root cause of this is that the vitamin array isn't being created right on a completely fresh character.