ISTWCMS-5647: adding the template so that page title works correctly

templates/blocks/block--page-title-block.html.twig

+{% if media == 'no' %}
+  {%
+    set classes = [
+    'block',
+    'block-' ~ configuration.provider|clean_class,
+    'block-' ~ plugin_id|clean_class,
+  ]
+  %}
+
+  <div{{ attributes.addClass(classes) }}>
+    {% if admin_label %}
+      <div class="uw-admin-label">{{ admin_label }}</div>
+    {% endif %}
+    {{ title_prefix }}
+    {% if label %}
+      <h2{{ title_attributes }}>{{ label }}</h2>
+    {% endif %}
+    {{ title_suffix }}
+    {% block content %}
+      {{ content }}
+    {% endblock %}
+  </div>
+{% endif %}