GC fix bundle #1

[SabreML]

What Does This PR Do

Fixes a bunch of GC issues that I found using #16607, as well as making some of them Initialize() where possible.
Each fix is in its own commit to make it easier to review.

Fixes:

(Not in order for some reason)

Why It's Good For The Game

Fixes!

Changelog

N/A

[AffectedArc07]

How dare you

[SabreML]

My computer's decided that it's going to BSOD any time I try doing something HDD-intensive. (See: Opening VSCode, Compiling the game code, Sometimes even just starting up my PC)
Because of this it may take a bit longer than hoped to address the reviews, so sorry about that.

[dearmochi]

Nit and Farie's reviews aside, LGTM

[hal9000PR]

while you are at it

/mob/living/simple_animal/hostile/scarybat/New(loc, mob/living/L as mob)
    ..()
    if(istype(L))
        owner = L

this never nulls the owner if you could add this to your PR it would be helpful.