Area display names (#21070)

Little more tuneup of area metadata, and also replaces area.name in
several locations with dynamic area display names (for example:
announcement that something was beamed aboard a thruster will once more
indicate whether it was the port or starboard thruster).

code/modules/alarm/alarm.dm

@@ -108,7 +108,8 @@
 
 /atom/proc/get_alarm_name()
 	var/area/A = get_area(src)
-	return A.name
+	var/display_name = get_area_display_name(A)
+	return display_name
 
 /area/get_alarm_name()
 	return name

code/modules/events/supply_drop.dm

@@ -12,7 +12,7 @@
 
 	var/area/a = random_station_area()
 	spawn_loc = a.random_space()
-	location_name = a.name
+	location_name = get_area_display_name(a)
 
 	if(prob(90))
 		var/rarity = 4

code/modules/hydroponics/spreading/spreading.dm

@@ -2,7 +2,7 @@
 #define VINE_GROWTH_STAGES 5
 
 /proc/spacevine_infestation(var/potency_min=70, var/potency_max=100, var/maturation_min=1, var/maturation_max=3)
-	var/turf/T = pick_subarea_turf(/area/hallway, list(/proc/is_station_turf, /proc/not_turf_contains_dense_objects))
+	var/turf/T = pick_subarea_turf(/area/horizon/hallway, list(/proc/is_station_turf, /proc/not_turf_contains_dense_objects))
 	if(T)
 		var/datum/seed/seed = SSplants.create_random_seed(TRUE, SEED_NOUN_PITS)
 		seed.set_trait(TRAIT_SPREAD,2)             // So it will function properly as vines.
@@ -15,8 +15,9 @@
 		vine.health = vine.max_health
 		vine.mature_time = 0
 		vine.process()
+		var/area_display_name = get_area_display_name(get_area(T))
 
-		log_and_message_admins("Spacevines spawned at \the [get_area(T)]", location = T)
+		log_and_message_admins("Spacevines spawned at \the [area_display_name]", location = T)
 		return
 
 	log_and_message_admins(SPAN_NOTICE("Event: Spacevines failed to find a viable turf."))

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

@@ -215,10 +215,7 @@
 	var/area/A = get_area(src)
 	var/area_name
 	if(holding_gps)
-		if(is_station_area(A))
-			area_name = get_area_display_name(A)
-		else
-			area_name = A.name
+		area_name = get_area_display_name(A)
 		. += "[area_name]"
 		. += ""
 	if(A.area_blurb)