Fix keyword delegation in form component

[deivid-rodriguez]

Trying to fix #312.

[javierjulio]

Totally missed that when reviewing the file beforehand. Thanks a lot! 🙌🏻 Do you see a need to create a test for this or release as is and then just drop Ruby 2.6 support? My understanding is that ruby2_keywords is needed for Ruby 2.6 and below but I could be mistaken.

[deivid-rodriguez]

I think we can ship this as is and trust the test you added on the activeadmin side to verify it works as expected.

My understanding is that ruby2_keywords is needed for Ruby 2.7, and that once we drop support for that we can use explicit delegation of each arg type like

def method_missing(method, *args, **kwargs, &block)
  if form_builder && form_builder.respond_to?(method)
    proxy_call_to_form(method, *args, **kwargs, &block)
  else
    super
  end
end

[Fivell]

❤️