Fixes map vote (#17740)

code/controllers/subsystem/vote.dm

@@ -184,6 +184,7 @@ SUBSYSTEM_DEF(vote)
 				var/datum/map/top_voted_map
 				for(var/x in subtypesof(/datum/map))
 					var/datum/map/M = x
+					if(initial(M.voteable))
 						// Set top voted map
 						if(. == "[initial(M.fluff_name)] ([initial(M.technical_name)])")
 							top_voted_map = M
@@ -240,6 +241,7 @@ SUBSYSTEM_DEF(vote)
 				question = "Map for next round"
 				for(var/x in subtypesof(/datum/map))
 					var/datum/map/M = x
+					if(initial(M.voteable))
 						choices.Add("[initial(M.fluff_name)] ([initial(M.technical_name)])")
 
 			if("custom")

code/modules/admin/verbs/mapping.dm

@@ -190,6 +190,7 @@ GLOBAL_VAR_INIT(intercom_range_display_status, 0)
 	var/list/map_datums = list()
 	for(var/x in subtypesof(/datum/map))
 		var/datum/map/M = x
+		if(initial(M.voteable))
 			map_datums["[initial(M.fluff_name)] ([initial(M.technical_name)])"] = M // Put our map in
 
 	var/target_map_name = input(usr, "Select target map", "Next map", null) as null|anything in map_datums

code/modules/mapping/base_map_datum.dm

@@ -14,3 +14,5 @@
 	var/map_path
 	/// URL to the maps webmap
 	var/webmap_url
+	/// Is this map voteable?
+	var/voteable = TRUE

code/modules/mapping/test_tiny.dm

@@ -2,3 +2,4 @@
 	fluff_name = "test_tiny"
 	technical_name = "test_tiny"
 	map_path = "_maps/map_files/test_tiny/test_tiny.dmm"
+	voteable = FALSE