GraphCopy: fix make_symbol_name to use new "Cons^!" descriptor name for head-lazy tail-strict lists

Libraries/graph_copy/graph_copy_with_names.icl

@@ -315,7 +315,7 @@ make_symbol_name "_system" descriptor_name prefix
 			-> prefix_char prefix+++"__Conss";
 		"Cons!!"
 			-> prefix_char prefix+++"__Conssts";
-		"Cons?!"
+		"Cons^!"
 			-> prefix_char prefix+++"__Consts";
 		"[#Int]"
 			-> "__Consi";