Cannot delete or edit a block that is placed in a section of the layout_builder Patch for 8.7

3005403-35__modified.patch

diff --git a/core/themes/seven/seven.theme b/core/themes/seven/seven.theme
index 078d2adc80..ee7ffb426b 100644
--- a/core/themes/seven/seven.theme
+++ b/core/themes/seven/seven.theme
@@ -87,10 +87,11 @@ function seven_preprocess_block_content_add_list(&$variables) {
 /**
  * Implements hook_preprocess_block() for block content.
  *
- * Disables contextual links for all blocks.
+ * Disables contextual links for all blocks except for layout builder blocks.
  */
 function seven_preprocess_block(&$variables) {
-  if (isset($variables['title_suffix']['contextual_links'])) {
+  if (isset($variables['title_suffix']['contextual_links'])
+    && !isset($variables['elements']['#contextual_links']['layout_builder_block'])) {
     unset($variables['title_suffix']['contextual_links']);
     unset($variables['elements']['#contextual_links']);
 

This is a modified patch from https://www.drupal.org/project/drupal/issues/3005403#comment-13326977