Merge pull request rails#51980 from justinko/no-doc-actioncable-test-cookies

:nodoc: for ActionCable::Connection::TestCookies

Author: rafaelfranca

actioncable/lib/action_cable/connection/test_case.rb

@@ -30,7 +30,7 @@ def assert_reject_connection(&block)
       end
     end
 
-    class TestCookies < ActiveSupport::HashWithIndifferentAccess
+    class TestCookies < ActiveSupport::HashWithIndifferentAccess # :nodoc:
       def []=(name, options)
         value = options.is_a?(Hash) ? options.symbolize_keys[:value] : options
         super(name, value)