Unlisted value fails for option, but passes for argument

[svoop]

Describe the bug

Given the following example:

#!/usr/bin/env ruby
require "bundler/setup"
require "dry/cli"

module Foo
  module CLI
    module Commands
      extend Dry::CLI::Registry

      class Start < Dry::CLI::Command
        argument :arg, values: %w(one two)
        option :opt, values: %w(one two)

        def call(arg: nil, opt: nil, **)
          puts "ARG: #{arg.inspect} / OPT: #{opt.inspect}"
        end
      end

      register "start", Start
    end
  end
end

Dry::CLI.new(Foo::CLI::Commands).call

The following somewhat unexpected behaviour occurs:

example start --opt=one      # ARG: nil / OPT: "one"
example start --opt=three    # ERROR: was called with arguments "--opt=three"
example start one            # ARG: "one" / OPT: nil
example start three          # ARG: "three" / OPT: nil     <-- OOPS

The last one should also result in an error IMO.

My environment

• Affects my production application: NO (but soon :-)
• Ruby version: 3.2
• OS: macOS Ventura