Feature/istwcms 6638 l26yan using layout builder iframe modal instead layout builder modal

uw_sites_all.install

@@ -2096,10 +2096,17 @@ function uw_sites_all_update_9168(&$sandbox) {
   }
 }
 
-/*
- * Uninstall layout_builder_modal and install layout_builder_iframe_modal.
+/**
+ * Installing views_tree module.
  */
 function uw_sites_all_update_9169(&$sandbox) {
+  \Drupal::service('module_installer')->install(['views_tree']);
+}
+
+/**
+ * Uninstall layout_builder_modal and install layout_builder_iframe_modal.
+ */
+function uw_sites_all_update_9170(&$sandbox) {
 
   // Uninstall layout_builder_modal.
   $modules = [