Make table vertically stacked on lg breakpoint

app/assets/javascripts/deploy_freeze/components/deploy_freeze_table.vue

@@ -53,6 +53,7 @@ export default {
       :items="freezePeriods"
       :fields="$options.fields"
       show-empty
+      stacked="lg"
     >
       <template #empty>
         <p data-testid="empty-freeze-periods" class="gl-text-center text-plain">