Fix TestingSupport Country Factory states_required

[RyanofWoods]

The mentioned attribute is commented out due to issues with Solidus' tests.

https://github.com/solidusio/solidus/blob/a6c2ceeb2ee6bff832080ebb11773f7b6e4c2df0/core/lib/spree/testing_support/factories/country_factory.rb#L23-L24

This should be fixed so that anyone developers can use the factory and not have to modify the factory to get its intended behaviour.

Solidus Version:

1.2 and above.

Current behavior

The attribute will always become false as this is the attribute's default value.

Expected behavior

Use carmen to get the correct states_required value.

[RyanofWoods]

Fix - WIP

[kennyadsl]

This bugfix will be available from Solidus 3.3!