Issue #3344386 by Charlie ChX Negyesi: Add entity to the entity reference...

Issue #3344386 by Charlie ChX Negyesi: Add entity to the entity reference label formatter render array

core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php

@@ -95,6 +95,7 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
       else {
         $elements[$delta] = ['#plain_text' => $label];
       }
+      $elements[$delta]['#entity'] = $entity;
       $elements[$delta]['#cache']['tags'] = $entity->getCacheTags();
     }
 

core/modules/field/tests/src/Kernel/EntityReference/EntityReferenceFormatterTest.php

@@ -376,6 +376,7 @@ public function testLabelFormatter() {
     // lacking any URL info.
     $expected_item_2 = [
       '#plain_text' => $this->unsavedReferencedEntity->label(),
+      '#entity' => $this->unsavedReferencedEntity,
       '#cache' => [
         'contexts' => [
           'user.permissions',