Claudiu Cristea
--- a/core/lib/Drupal/Core/Entity/EntityTypeBundleInfo.php
+++ b/core/lib/Drupal/Core/Entity/EntityTypeBundleInfo.php
+          $altered_label_bundles[$entity_type_id][] = $bundle;
+        }
+      }
+    }
+    if ($altered_label_bundles) {
+      $altered_label_bundles_string = trim(
+        array_reduce(
+          array_keys($altered_label_bundles),
+          function (string $string, string $entity_type_id) use ($altered_label_bundles): string {
+            return $string . implode(', ', $altered_label_bundles[$entity_type_id]) . " ({$entity_type_id}) ";
+          },
+          ''
+        )
+      );
+      // @todo Convert deprecation to exception in drupal:10.0.0.
+      @trigger_error("Using hook_entity_bundle_info_alter() to alter the label of bundles stored as config entities is deprecated in drupal:9.2.0 and is not permitted in drupal:10.0.0. Label altered bundles: {$altered_label_bundles_string}. Use different methods to alter the label for bundles stored as config entities. See https://www.drupal.org/node/3186694", E_USER_DEPRECATED);