Issue #3260698: Make it simpler to disable validators in tests

tests/src/Functional/ReadinessValidationTest.php

@@ -26,6 +26,16 @@ class ReadinessValidationTest extends AutomaticUpdatesFunctionalTestBase {
    */
   protected $defaultTheme = 'stark';
 
+  /**
+   * {@inheritdoc}
+   */
+  protected $disableValidators = [
+    // The parent property disables
+    // 'automatic_updates.validator.file_system_permissions' but the
+    // 'automatic_updates' module is not enabled in setup for this test.
+    'package_manager.validator.file_system',
+  ];
+
   /**
    * A user who can view the status report.
    *