[5.3] Restrict bootstrap collapse to the header (#44858)

Author: brianteeman

build/media_source/templates/administrator/atum/js/template.es6.js

@@ -288,13 +288,13 @@ window.addEventListener('joomla:menu-toggle', (event) => {
 });
 
 /**
- * Close any open data-bs-toggle="collapse" when opening a data-bs-toggle="dropdown"
+ * Close any open data-bs-toggle="collapse" in the header when opening a data-bs-toggle="dropdown"
  *
  * @since 4.4
  */
 document.querySelectorAll('[data-bs-toggle="dropdown"]').forEach((button) => {
   button.addEventListener('click', () => {
-    document.querySelectorAll('[data-bs-toggle="collapse"]').forEach((cb) => {
+    document.querySelectorAll('#header [data-bs-toggle="collapse"]').forEach((cb) => {
       const target = document.querySelector(cb.getAttribute('data-bs-target'));
       if (target.contains(button)) {
         return;