Add validation message to the form for Drupal 10.2 and above

D10 uses a modal to display delete confrimation This makes the Drupal set message redundant

Closes #3447354

src/FormIntegrityValidation/ViewedDeleteForm.php

@@ -124,10 +124,19 @@ final class ViewedDeleteForm implements ContainerInjectionInterface {
       if ($relations->hasRelationsWithStatus('valid')) {
         if ($this->getIntegrityValidationMode() == IntegritySettingsForm::BLOCK_MODE) {
           $form['actions']['submit']['#disabled'] = TRUE;
-          $this->messenger->addError($this->getMessage($relations));
+
+          if (version_compare(\Drupal::VERSION, '10.2', '>=')) {
+            $form['messages'] = $this->getMessage($relations);
+          } else {
+            $this->messenger->addError($this->getMessage($relations));
+          }
         }
         else {
-          $this->messenger->addWarning($this->getMessage($relations));
+          if (version_compare(\Drupal::VERSION, '10.2', '>=')) {
+            $form['messages'] = $this->getMessage($relations);
+          } else {
+            $this->messenger->addWarning($this->getMessage($relations));
+          }
         }
       }
     }