Issue #3439837 by SolimanHarkas, vensires: Fix Forum tests that rely on UID1's super user behavior

(cherry picked from commit c9248457c4)

core/modules/forum/tests/src/Functional/ForumUninstallTest.php

@@ -28,14 +28,6 @@ class ForumUninstallTest extends BrowserTestBase {
    */
   protected static $modules = ['forum'];
 
-  /**
-   * {@inheritdoc}
-   *
-   * @todo Remove and fix test to not rely on super user.
-   * @see https://www.drupal.org/project/drupal/issues/3437620
-   */
-  protected bool $usesSuperUserAccessPolicy = TRUE;
-
   /**
    * {@inheritdoc}
    */
@@ -177,7 +169,9 @@ class ForumUninstallTest extends BrowserTestBase {
    * Tests uninstallation of forum module when vocabulary is deleted.
    */
   public function testForumUninstallWithoutForumVocabulary() {
-    $this->drupalLogin($this->rootUser);
+    $this->drupalLogin($this->drupalCreateUser([
+      'administer modules',
+    ]));
     Vocabulary::load('forums')->delete();
 
     // Now attempt to uninstall forum.