fix: fix generated offset for zero gutters in "xy-cell-offset" #11471
fix: fix generated offset for zero gutters in "xy-cell-offset" #11471

Closes https://github.com/zurb/foundation-sites/issues/11471

denisahac/foundation-sites,zurb/foundation,denisahac/foundation-sites,zurb/foundation,zurb/foundation-sites,denisahac/foundation-sites,zurb/foundation-sites,abdullahsalem/foundation-sites,abdullahsalem/foundation-sites,zurb/foundation,DaSchTour/foundation-sites,zurb/foundation-sites,DaSchTour/foundation-sites,abdullahsalem/foundation-sites