EditBillingData: Use 140 as upper boundary

Elwig/Helpers/Billing/EditBillingData.cs

@@ -68,7 +68,7 @@ namespace Elwig.Helpers.Billing {
             return dict3
                 .Select(e => new GraphEntry(e.Key, curves[e.Key], e.Value
                     .Select(s => new ContractSelection(vars[s[..2]], s.Length > 2 ? attrs[s[2..]] : null))
-                    .ToList(), 50, 120))
+                    .ToList(), 50, 140))
                 .ToList();
         }