Issue #3511999: Introduce class WorkflowTargetEntity

src/Hook/WorkflowEntityHooks.php

@@ -68,7 +68,8 @@ class WorkflowEntityHooks {
   #[Hook('entity_presave')]
   public function entityPresave(EntityInterface $entity) {
     if ($entity->getEntityTypeId() == 'entity_form_display') {
-      if ($entity->targetEntityType == 'workflow_transition') {
+      /** @var \Drupal\Core\Entity\Entity\EntityFormDisplay $entity */
+      if ($entity->getTargetEntityTypeId() == 'workflow_transition') {
         if (isset($entity->hidden['to_sid'])) {
           WorkflowTransitionForm::addPreSaveBasefieldWarning();
           $hidden = $entity->hidden;