Fix outdated references of multistore mixin in SSR
Fix outdated references of multistore mixin in SSR

DivanteLtd/vue-storefront,DivanteLtd/vue-storefront,DivanteLtd/vue-storefront,pkarw/vue-storefront,pkarw/vue-storefront,pkarw/vue-storefront,DivanteLtd/vue-storefront,pkarw/vue-storefront