Incorrect deprecation removal in \Drupal\migrate_drupal_ui\Form\ReviewForm::__construct

Problem/Motivation

In #3261004: Remove deprecated code from the migration system we removed the deprecation of not adding the $module_handler argument in \Drupal\migrate_drupal_ui\Form\ReviewForm::__construct.

We did however forgot to remove the = NULL-bit from the argument itself:

  public function __construct(StateInterface $state, MigrationPluginManagerInterface $migration_plugin_manager, PrivateTempStoreFactory $tempstore_private, MigrationState $migrationState, ConfigFactoryInterface $config_factory, ModuleHandlerInterface $module_handler = NULL) {

Let's fix that here.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet