Corrects 200+ instances of "it's" where it should've been "its" instead (#85169)

## About The Pull Request

it's - conjunction of "it" and "is"
its - possessive form of "it"

grammar is hard, and there were a lot of places where "it's" was used
where it shouldn't have been. i went and painstakingly searched the
entire repository for these instances, spending a few hours on it. i
completely ignored the changelog archive, and i may have missed some
outliers. most player-facing ones should be corrected, though
## Why It's Good For The Game
proper grammar is good

## Changelog
🆑
spellcheck: Numerous instances of "it's" have been properly replaced
with "its"
/🆑

code/datums/components/_component.dm

@@ -4,7 +4,7 @@
  * The component datum
  *
  * A component should be a single standalone unit
- * of functionality, that works by receiving signals from it's parent
+ * of functionality, that works by receiving signals from its parent
  * object to provide some single functionality (i.e a slippery component)
  * that makes the object it's attached to cause people to slip over.
  * Useful when you want shared behaviour independent of type inheritance