Add GA4 tracking for travel advice

Author: andysellick

app/views/content_items/travel_advice.html+print.erb

@@ -20,10 +20,17 @@
 
     <%= render 'govuk_publishing_components/components/print_link', {
       data_attributes: {
+        module: "ga4-event-tracker",
         "track-category": "printButton",
         "track-action": "clicked",
         "track-label": t("components.print_link.text"),
-        module: "print-link"
+        ga4: {
+          event_name: 'print_page',
+          type: 'Print this page',
+          index: 1,
+          index_total: 2,
+          section: 'Contents',
+        },
       },
       margin_bottom: 8,
       text: t("components.print_link.text"),
@@ -45,10 +52,17 @@
 
     <%= render 'govuk_publishing_components/components/print_link', {
       data_attributes: {
+        module: "ga4-event-tracker",
         "track-category": "printButton",
         "track-action": "clicked",
         "track-label": t("components.print_link.text"),
-        module: "print-link"
+        ga4: {
+          event_name: 'print_page',
+          type: 'Print this page',
+          index: 2,
+          index_total: 2,
+          section: 'Footer',
+        },
       },
       text: t("components.print_link.text")
     } %>