Issue #3211413 by svendecabooter, grayle, Webbeh: Support block_uuid inline block configuration

src/Plugin/Field/FieldWidget/LayoutBuilderCopyWidget.php

@@ -390,6 +390,11 @@ class LayoutBuilderCopyWidget extends WidgetBase {
   protected function updateComponentConfiguration(array $configuration, BlockContentInterface $replicated_block): array {
     $configuration['block_id'] = $replicated_block->id();
     $configuration['block_revision_id'] = $replicated_block->getRevisionId();
+    // Add support for block UUID export.
+    // @see https://www.drupal.org/node/3180702
+    if (!empty($configuration['block_uuid'])) {
+      $configuration['block_uuid'] = $replicated_block->uuid();
+    }
     return $configuration;
   }