Rails/EnumSyntax crash when the 3rd argument is not kwargs

[Tietew]

Expected behavior

rubocop works with no errors.

Actual behavior

rubocop reports Rails/EnumSyntax crashes:

$ bundle exec rubocop -d
(snip)
An error occurred while Rails/EnumSyntax cop was inspecting ***.
undefined method `key' for nil
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:109:in `option_key?'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:62:in `block (2 levels) in check_enum_options'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:61:in `each'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:61:in `block in check_enum_options'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:48:in `enum_with_options?'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:60:in `check_enum_options'
.../rubocop-rails-2.26.2/lib/rubocop/cop/rails/enum_syntax.rb:44:in `on_send'
(snip)

Steps to reproduce the problem

Inspect following code:

class User < ApplicationRecord
  enum :card, { clow: 1 }, prefix
end

Note: the 3rd argument prefix is a typo for prefix: true.

RuboCop version

1.67.0 (using Parser 3.3.5.0, rubocop-ast 1.32.3, analyzing as Ruby 3.3, running on ruby 3.3.5) [x86_64-linux]
  - rubocop-capybara 2.21.0
  - rubocop-factory_bot 2.26.1
  - rubocop-performance 1.22.1
  - rubocop-rails 2.26.2
  - rubocop-rake 0.6.0
  - rubocop-rspec 3.1.0
  - rubocop-rspec_rails 2.30.0