[ruby/prism] Match RubyParser behavior for -> lambda args

ruby/prism@9f55551b09

Author: presidentbeef

lib/prism/translation/ruby_parser.rb

@@ -1152,7 +1152,7 @@ def visit_lambda_node(node)
           parameters =
             case node.parameters
             when nil, ItParametersNode, NumberedParametersNode
-              s(node, :args)
+              0
             else
               visit(node.parameters)
             end