ISTWCMS-4208: adding constant for saved node status

src/Form/UwContentModerationForm.php

@@ -162,9 +162,9 @@ class UwContentModerationForm extends ConfirmFormBase {
     // Adding the redirect back to the node.
     $form_state->setRedirectUrl($url);
 
-    // If the saved status is 2, means that we successfully changed
+    // If the saved status is SAVED_UPDATED (2), means that we successfully changed
     // the moderation state so set the message appropriately.
-    if ($saved_status == 2) {
+    if ($saved_status == SAVED_UPDATED) {
 
       if ($this->status) {
         $this->messenger()->addStatus($this->t('You have successfully unpublished this content.'));