Issue #3422037: Fix PHPUnit tests in Drupal 10.

git commit -m 'Issue #3422037: Fix PHPUnit tests in Drupal 10. Tests were failing due to a non-existent 'menu.tree_storage' service. (see https://www.drupal.org/project/drupal/issues/3385730). Replaced it with 'plugin.manager.menu.link' service. And since the "Stable" theme is no longer present (see change record https://www.drupal.org/node/3309392)'

tests/src/Functional/AliasHierarchyAliasesTest.php

@@ -15,7 +15,7 @@ class AliasHierarchyAliasesTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected $defaultTheme = 'stable';
+  protected $defaultTheme = 'stark';
 
   /**
    * {@inheritdoc}