fix: use fallback gutter for fallback breakpoint in XY cell #11194
fix: use fallback gutter for fallback breakpoint in XY cell #11194

When no breakpoint is passed to `xy-cell` and a fallback "zero" breakpoint is used, use a fallback gutter as well if it is not found. This way, an implicit behavior stay implicit and a warning is thrown only if a breakpoint was explicitely given.

Closes https://github.com/zurb/foundation-sites/issues/11194

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