UploadedFileInterface::validate() added and UploadedFileInterface::isValid(), ::getError() and ::getErrorMessage() are deprecated

UploadedFileInterface::isValid(), ::getError() and ::getErrorMessage() are deprecated.

\Drupal\file\Upload\FileUploadHandler::handleFileUpload() now calls UploadedFileInterface::validate(), and FileValidation exceptions are no longer thrown.

Before:

try {
  $result = $file_upload_handler->handleFileUpload($form_uploaded_file, $validators, $destination, $replace, FALSE);
}
catch (IniSizeFileException | FormSizeFileException $e) {
  \Drupal::messenger()->addError(t('The file %file could not be saved because it exceeds %maxsize, the maximum allowed size for uploads.', [
    '%file' => $uploaded_file->getFilename(),
    '%maxsize' => ByteSizeMarkup::create(Environment::getUploadMaxSize()),
  ]));
}
    catch (PartialFileException | NoFileException $e) {
  \Drupal::messenger()->addError(t('The file %file could not be saved because the upload did not complete.', [
    '%file' => $uploaded_file->getFilename(),
  ]));
}
catch (SymfonyFileException $e) {
      \Drupal::messenger()->addError(t('The file %file could not be saved. An unknown error has occurred.', ['%file' => $uploaded_file->getFilename()]));    
}
catch (FileValidationException $e) {
      $message = [
        'error' => [
          '#markup' => t('The specified file %name could not be uploaded.', ['%name' => $e->getFilename()]),
        ],
        'item_list' => [
          '#theme' => 'item_list',
          '#items' => $e->getErrors(),
        ],
      ];
      \Drupal::messenger()->addError($renderer->renderPlain($message));
}

After:

$result = $file_upload_handler->handleFileUpload($form_uploaded_file, $validators, $destination, $replace, FALSE);

if ($result->hasViolations()) {
  $errors = [];
  foreach ($result->getViolations() as $violation) {
    $errors[] = $violation->getMessage();
  }
  $message = [
    'error' => [
      '#markup' => t('The specified file %name could not be uploaded.', ['%name' => $uploaded_file->getClientOriginalName()]),
    ],
    'item_list' => [
      '#theme' => 'item_list',
      '#items' => $errors,
    ],
  ];
  \Drupal::messenger()->addError($renderer->renderPlain($message));
}