Incorrect docblock for $configEntityStorageInterface in ContentLanguageSettingsUnitTest

Problem/Motivation

In core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php, there are incorrect and misleading docblocks for class properties.

/**
   * The typed configuration manager used for testing.
   *
   * @var \Drupal\Core\Config\TypedConfigManagerInterface|\PHPUnit\Framework\MockObject\Stub
   */
  protected $typedConfigManager;

  /**
   * The typed configuration manager used for testing.
   *
   * @var \Drupal\Core\Config\Entity\ConfigEntityStorage
   */
  protected $configEntityStorageInterface;

Both properties have identical descriptions, but represent different types:

* $typedConfigManager correctly references TypedConfigManagerInterface (with a mock/stub).
* $configEntityStorageInterface incorrectly describes itself as a "typed configuration manager" while its actual type is ConfigEntityStorage.

This inconsistency reduces code clarity and may confuse developers and static analysis tools.

Steps to reproduce

1. Open the file: core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php
2. Locate the following properties:

* $typedConfigManager
* $configEntityStorageInterface
3. Observe that both docblocks describe the same purpose despite different types.

Proposed resolution

Update the docblock for $configEntityStorageInterface to accurately reflect its purpose and type.

For example:

/**
 * The config entity storage used for testing.
 *
 * @var \Drupal\Core\Config\Entity\ConfigEntityStorage
 */
protected $configEntityStorageInterface;

Ensure the description matches the actual responsibility of the property.

Remaining tasks

None.

User interface changes

None.

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Introduced terminology

None.

API changes

None.

Data model changes

None.

Release notes snippet

None.