ISTWCMS-5650: Revert to previous version of twig and add new

src/patterns/04-components/facts-and-figures/facts-and-figures.twig

-<div id="uw-ff-{{ ffs.id }}" class="uw-ff {% if ffs.show %}uw-ff--with-bubbles uw-ff--with-bubbles__{{ ffs.bg_colour}}{% else%}uw-ff__{{ ffs.bg_colour}}{% endif %}" data-carousel="{{ ffs.num_per_carousel ? 'yes' :'no' }}" data-num-per-carousel="{{ ffs.num_per_carousel }}" data-id="{{ ffs.id }}">
+<div id="uw-ff-{{ ffs.id }}" class="uw-ff {% if ffs.show %}uw-ff--with-bubbles uw-ff--with-bubbles__{{ ffs.bg_colour}}{% else%}uw-ff__{{ ffs.bg_colour}}{% endif %} {% if ffs.num_per_carousel == ffs.details|length %} uw-hide-ff-nav{% endif %} {% if ffs.num_per_carousel  == '1' and ffs.details|length == '1'%} uw-hide-ff-nav-all {% endif %}" data-carousel="{{ ffs.num_per_carousel ? 'yes' :'no' }}" data-num-per-carousel="{{ ffs.num_per_carousel }}" data-id="{{ ffs.id }}">
   <div class="uw-ff--wrapper uw-ff--wrapper__text-{{ ffs.text_align }} {{ ffs.num_per_carousel ? 'uw-ff--carousel' : 'uw-ff--no-carousel' }} {{ ffs.theme }}">
     {% if ffs.num_per_carousel >= 1%}
       {% embed '@layouts/carousel/carousel.twig' %}
@@ -22,4 +22,12 @@
       {% endfor %}
     {% endif %}
   </div>
+
+{% if ffs.num_per_carousel %}
+    <div class="uw-button--wrap">
+    <button tabindex="0" class="uw-button--previous"> < Prev</button>
+    <button tabindex="0" class="uw-button--next">Next ></button>
+  </div>
+
+{% endif %}
 </div>