minor: contact implementation

src/scripts/intl.js

@@ -187,10 +187,14 @@ document.addEventListener("DOMContentLoaded", () => {
   */
   function recursivePopulate(element) {
     Array.from(element.querySelectorAll('*')).forEach((e) => {
-      e.addEventListener("populate", (e) => {
-        recursivePopulate(e.target);
-        jsI18n.processNode(e.target);
-      });
+      if(e.content && e.content instanceof DocumentFragment) {
+        recursivePopulate(e.content);
+      } else if(e instanceof HTMLElement) {
+        e.addEventListener("populate", (el) => {
+          recursivePopulate(el.target);
+          jsI18n.processNode(el.target);
+        });
+      }
     });
   }
   // Process every children from document