Map Fixes for Wrecked Factory Ruin (#3543)

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## About The Pull Request

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Some of the walls that were meant to be indestructible werent, and an
enemy in the dorms didnt spawn.

## Why It's Good For The Game

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benefit the game. If you can't justify it in words, it might not be
worth adding. -->

Fixes are good.

## Changelog

:cl:
fix: Fixes walls and an enemy spawn in the Wrecked Factory
/:cl:

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_maps/RandomRuins/LavaRuins/lavaland_surface_wrecked_factory.dmm

@@ -2155,6 +2155,7 @@
 	dir = 4
 	},
 /obj/effect/decal/cleanable/dirt/dust,
+/mob/living/simple_animal/hostile/human/syndicate/ranged/smg/space/stormtrooper,
 /turf/open/floor/plasteel/dark,
 /area/ruin/lavaland/factory/dorms)
 "tN" = (
@@ -6370,7 +6371,7 @@ LP
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@@ -6424,7 +6425,7 @@ vE
 EU
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@@ -6478,7 +6479,7 @@ ab
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@@ -6532,7 +6533,7 @@ yQ
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