Issue #3133113 by hatuhay: Update causes DomainException: When a #lazy_builder callback is

lazy_builder_conflict-3133113-4.patch

-diff --git a/bootstrap_barrio.theme b/bootstrap_barrio.theme
-index 61d6bb2..8b9dd2c 100644
---- a/bootstrap_barrio.theme
-+++ b/bootstrap_barrio.theme
-@@ -348,7 +348,9 @@ function bootstrap_barrio_preprocess_region(&$variables) {
-  * Implements hook_preprocess_HOOK() for block.html.twig.
-  */
- function bootstrap_barrio_preprocess_block(&$variables) {
--  $variables['content']['#attributes']['block'] = $variables['attributes']['id'];
-+  if ($variables['base_plugin_id'] == 'system_menu_block') {
-+    $variables['content']['#attributes']['block'] = $variables['attributes']['id'];
-+  }
-   // Add a clearfix class to system branding blocks.
-   if ($variables['plugin_id'] == 'system_branding_block') {
-     $variables['attributes']['class'][] = 'clearfix';