enforce empty state font (#5113)

* enforce empty state font

* lint

Author: stuartromanek

modules/@apostrophecms/layout-widget/ui/apos/components/AposGridLayout.vue

@@ -352,6 +352,7 @@ export default {
 
   &__grid.manage :deep(.apos-empty-area::before) {
     position: absolute;
+    font-family: var(--a-family-default);
     text-align: center;
     content: var(--empty-area-text);
   }