Issue #3263654: Move all HAL tests to the module in preparation of removal in D10

core/modules/aggregator/tests/src/Functional/Hal/FeedHalJsonAnonTest.php

-<?php
-
-namespace Drupal\Tests\aggregator\Functional\Hal;
-
-use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
-
-/**
- * @group hal
- */
-class FeedHalJsonAnonTest extends FeedHalJsonTestBase {
-
-  use AnonResourceTestTrait;
-
-  /**
-   * {@inheritdoc}
-   */
-  protected static $mimeType = 'application/hal+json';
-
-  /**
-   * {@inheritdoc}
-   */
-  protected $defaultTheme = 'stark';
-
-}