fix: properly initialize CMP, GTM and data layer for tracking

templates/booking/create/success.html.twig

@@ -55,6 +55,9 @@
 
         </div>
     </div>
+{% endblock %}
+
+{% block data_layer %}
     {% if bookingTotal is not null and travelName is not null %}
         <script>
             window.dataLayer = window.dataLayer || [];