[NO GBP] Fixing a small issue with chasm fishing (#78111)

## About The Pull Request
The default spawnables from chasms are spawned on top of the chasm
rather than on the user's turf, and that can be an issue.

## Why It's Good For The Game
This will fix #77982.

## Changelog

🆑
fix: fixed fishing skeleton mob spawners that immediately crumble back
into the void of whatever chasm you fished them from.
/🆑

code/modules/mob_spawn/corpses/species_corpses.dm

@@ -2,6 +2,8 @@
 //corpses that only differentiate themselves by representing a species
 
 /obj/effect/mob_spawn/corpse/human/skeleton
+	//these are also fished in chasms so it wouldn't hurt giving them an apter name than "mob spawner"
+	name = "skeleton"
 	mob_species = /datum/species/skeleton
 
 /obj/effect/mob_spawn/corpse/human/zombie