[MIRROR] [NO GBP] Reverses the logic for body collision to determine …

…knockdown (#2180)

* [NO GBP] Reverses the logic for body collision to determine knockdown (#81712)

## About The Pull Request

The body that is thrown at someone having knockdown proofing is not what
determines whether the victim of the collision is knocked over, but the
victim themselves having this trait.

## Why It's Good For The Game

I have ADHD.

## Changelog
:cl:
fix: Being in a Swat Suit appropriately protects you from collisions
with a body, rather than the body thrown at you having these protections
protecting YOU, the victim of the collision.
/:cl:

* [NO GBP] Reverses the logic for body collision to determine knockdown

---------

Co-authored-by: NovaBot <[email protected]>
Co-authored-by: necromanceranne <[email protected]>

code/modules/mob/living/carbon/carbon.dm

@@ -85,7 +85,7 @@
 				span_userdanger("You violently crash into [victim][extra_speed ? " extra hard" : ""], but [victim] managed to block the worst of it!"))
 			log_combat(src, victim, "crashed into and was blocked by")
 			return
-		else if(HAS_TRAIT(src, TRAIT_BRAWLING_KNOCKDOWN_BLOCKED))
+		else if(HAS_TRAIT(victim, TRAIT_BRAWLING_KNOCKDOWN_BLOCKED))
 			victim.take_bodypart_damage(10 + 5 * extra_speed, check_armor = TRUE, wound_bonus = extra_speed * 5)
 			victim.apply_damage(10 + 10 * extra_speed, STAMINA)
 			victim.adjust_staggered_up_to(STAGGERED_SLOWDOWN_LENGTH * 2, 10 SECONDS)