Fix const_get arguments in api models

[coiti]

Hubspot::Discovery::BaseApiClient#require_api_models overrides the const_get method for generated classes under certain circumstances, but the override only accepts one argument, whereas the original Module#const_get accepts two. This can be a problem when mocking these classes in tests, such as when using instance_double from rspec-mocks.

For example:

Failure/Error: let(:hubspot_company_object) { instance_double(Hubspot::Crm::Companies::SimplePublicObject) }
     
ArgumentError:
  wrong number of arguments (given 2, expected 1)

This fixes that by adding anonymous arguments to the method override, letting the super call handle the extra argument.