fix: Make CollectionDecorator respond_to? to ORM methods

[brunohkbx]

Testing

1. Create a decorator for the model and its association

class OrderHistoryDecorator < Draper::Decorator
  delegate_all
end

class OrderDecorator < Draper::Decorator
  delegate_all

  decorates_association :order_histories, with: OrderHistoryDecorator
end

2. Call respond_to? with some ORM method allowed by the strategy

[1] pry(main)> order.order_histories.decorate.respond_to?(:includes)
=> true

References

• method_missing usage

[codebycliff]

Looks good! Thanks for all the contributions.