Protected branches EE tests don't need to_sym and send

In spec/features/protected_tags/access_control_ee_spec.rb and the equivalent file for branches we have

`roles.each { |(access_type_id, _)| expect(ProtectedTag.last.send("create_access_levels".to_sym).map(&:access_level)).to include(access_type_id) }`

The following discussion from !1629 (merged) should be addressed:

• @rdavila started a discussion: (+2 comments)

  We can use a symbol directly here: :create_access_levels, also looks like we don't need to use send since that method is public. I think we can refactor these specs with something like:

    access_type_ids = ProtectedTag.last.create_access_levels.map(&:access_level)
    user_ids = ...
    
    roles.each { |(access_type_id, _)| expect(access_type_ids).to include(access_type_id) }
    ...