Revert changes to core tests and unhide Package Manager

core/modules/help/tests/src/Kernel/HelpEmptyPageTest.php

@@ -17,7 +17,7 @@ class HelpEmptyPageTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  protected static $modules = ['system', 'help_test', 'user', 'path_alias', 'package_manager'];
+  protected static $modules = ['system', 'help_test', 'user', 'path_alias'];
 
   /**
    * {@inheritdoc}

core/modules/package_manager/package_manager.info.yml

@@ -4,4 +4,3 @@ description: 'API module providing functionality for staging package updates.'
 package: Core
 version: VERSION
 lifecycle: experimental
-hidden: true

core/tests/Drupal/KernelTests/Core/Asset/ResolvedLibraryDefinitionsFilesMatchTest.php

@@ -88,7 +88,7 @@ class ResolvedLibraryDefinitionsFilesMatchTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  protected static $modules = ['system', 'user', 'path_alias', 'package_manager'];
+  protected static $modules = ['system', 'user', 'path_alias'];
 
   /**
    * {@inheritdoc}
@@ -132,7 +132,6 @@ protected function setUp(): void {
     $this->allModules[] = 'system';
     $this->allModules[] = 'user';
     $this->allModules[] = 'path_alias';
-    $this->allModules[] = 'package_manager';
     $database_module = \Drupal::database()->getProvider();
     if ($database_module !== 'core') {
       $this->allModules[] = $database_module;