Some tweaks for the runtime map (#22755)

## About PR

- Adds a latejoin landmark, this was causing a runtime when
`LateSpawn()` weren't able to find any (somehow missed this after the
remap, oops)

- Adds some sections for kitchen and disposal testing, among a few other
qol changes

- Removes some ancient area definitions (most of it unused) from the
code. Some of these were used in the old runtime map and
`vault_unique.dmm`, which is also removed in this pr since it no longer
spawns

code/game/area/areas.dm

@@ -540,7 +540,7 @@
 
 		//Although hostile mobs instadying to turrets is fun
 		//If there's no AI they'll just be hit with stunbeams all day and spam the attack logs.
-		if (istype(A, /area/turret_protected) || LAZYLEN(A.turret_controls))
+		if (LAZYLEN(A.turret_controls))
 			continue
 
 		if(!A.hostile_events)