change(cards): show date by default even when option isn't set

- due to bug in Volto boolean when it doesn't take into consideration the
  default value and we have a requirement to always show the image, the title
  and the publication date for a card we check if the publication date isn't
  false therefore being ok when it is undefined.
  You will need to enable and disable the publication boolean flag if you
  really want to hide it

src/components/UniversalCard/CardMeta.jsx

@@ -7,7 +7,7 @@ const CardMeta = (props) => {
   const { item, itemModel = {}, head_title } = props;
   const { EffectiveDate } = item;
   const locale = config.settings.dateLocale || 'en-gb';
-  const showDate = itemModel?.hasDate && EffectiveDate !== 'None';
+  const showDate = itemModel.hasDate !== false && EffectiveDate !== 'None';
   const showMeta = !!(head_title || (itemModel?.hasMetaType && item['@type']));
   const show = showDate || showMeta;