[MIRROR] Cleans up ..() usage in organs' Insert() and Remove() [MDB IGNORE] (#19948)

* Cleans up `..()` usage in organs' `Insert()` and `Remove()` (#74055)

## About The Pull Request
fumbled around while investigating #74047 and turns out there's other
organs that have the same issue as the reported alien organs in that
issue. went around and replaced parent calls where applicable
(cursed/demonic hearts, flashlight eyes, alien organs, abductor glands)

## Why It's Good For The Game
Fixes #74047
Considerably less ghost internal organs, hopefully less unreported jank
on removing organs

## Changelog
🆑
fix: fixed a few internal organs acting wonky on inserting/removing
(some xenomorph organs, abductor glands, flashlight eyes, demon/cursed
hearts)
/🆑

* Cleans up `..()` usage in organs' `Insert()` and `Remove()`

---------

Co-authored-by: Sealed101 <75863639+Sealed101@users.noreply.github.com>

code/game/objects/items/body_egg.dm

@@ -16,7 +16,7 @@
 		Insert(loc)
 
 /obj/item/organ/internal/body_egg/Insert(mob/living/carbon/M, special = FALSE, drop_if_replaced = TRUE)
-	..()
+	. = ..()
 	ADD_TRAIT(owner, TRAIT_XENO_HOST, ORGAN_TRAIT)
 	ADD_TRAIT(owner, TRAIT_XENO_IMMUNE, ORGAN_TRAIT)
 	owner.med_hud_set_status()
@@ -28,7 +28,7 @@
 		REMOVE_TRAIT(owner, TRAIT_XENO_IMMUNE, ORGAN_TRAIT)
 		owner.med_hud_set_status()
 		INVOKE_ASYNC(src, PROC_REF(RemoveInfectionImages), owner)
-	..()
+	return ..()
 
 /obj/item/organ/internal/body_egg/on_death(delta_time, times_fired)
 	. = ..()