DRUPAL_CORE_REMOVED_MODULE_LIST and DRUPAL_CORE_REMOVED_THEME_LIST moved to RemovedCoreExtensionList

The constants DRUPAL_CORE_REMOVED_MODULE_LIST and DRUPAL_CORE_REMOVED_THEME_LIST have been deprecated from Drupal\system\Install\Requirements\SystemRequirements in favor of a new dedicated class Drupal\system\RemovedCoreExtensionList.

The new class also provides two static helper methods:

• RemovedCoreExtensionList::isRemovedModule(string $name): bool
• RemovedCoreExtensionList::isRemovedTheme(string $name): bool

Before

use Drupal\system\Install\Requirements\SystemRequirements;

// Check membership
if (array_key_exists($name, SystemRequirements::DRUPAL_CORE_REMOVED_MODULE_LIST)) { ... }
if (array_key_exists($name, SystemRequirements::DRUPAL_CORE_REMOVED_THEME_LIST)) { ... }

// Get human-readable label
$label = SystemRequirements::DRUPAL_CORE_REMOVED_MODULE_LIST[$name];
$label = SystemRequirements::DRUPAL_CORE_REMOVED_THEME_LIST[$name];

After

use Drupal\system\RemovedCoreExtensionList;

// Check membership - use the new helper methods
if (RemovedCoreExtensionList::isRemovedModule($name)) { ... }
if (RemovedCoreExtensionList::isRemovedTheme($name)) { ... }

// Get human-readable label - access the new constants directly
$label = RemovedCoreExtensionList::MODULES[$name];
$label = RemovedCoreExtensionList::THEMES[$name];