[MIRROR] de-reference save_data lists (#9067)

Co-authored-by: Heroman3003 <31296024+Heroman3003@users.noreply.github.com>
Co-authored-by: Kashargul <KashL@t-online.de>

code/_helpers/type2type.dm

@@ -607,3 +607,21 @@
 		if(!isnull(path))
 			. += path
 
+/proc/path2text_list(list/L)
+	. = list()
+	for(var/key in L)
+		var/text = "[key]"
+		if(!isnull(L[text]))
+			.[text] = L[text]
+			continue
+		if(!isnull(L[key]))
+			.[text] = L[key]
+			continue
+		if(!isnull(text))
+			.[text] = ""
+
+/proc/check_list_copy(var/i)
+	if(islist(i))
+		var/list/l = i
+		return l.Copy()
+	return i