Cover default over_max_bytesize_param_value method

Author: jeremyevans

spec/rodauth_spec.rb

@@ -42,7 +42,7 @@
     rodauth do
       enable :login
       over_max_bytesize_param_value do |_, v|
-        v[0, 15] if over_max
+        over_max ? v[0, 15] : super(_, v)
       end
     end
     roda do |r|