Issue #3164161 by dww, jungle, longwave: Move the @runInSeparateProcess...

Issue #3164161 by dww, jungle, longwave: Move the @runInSeparateProcess annotation to the SettingsTest class so it covers all test methods

core/tests/Drupal/Tests/Core/Site/SettingsTest.php

@@ -9,6 +9,7 @@
 
 /**
  * @coversDefaultClass \Drupal\Core\Site\Settings
+ * @runTestsInSeparateProcesses
  * @group Site
  */
 class SettingsTest extends UnitTestCase {
@@ -167,8 +168,6 @@ public function testGetInstanceReflection() {
    * @param bool $expect_deprecation_message
    *   Should the case expect a deprecation message? Defaults to TRUE.
    *
-   * @runInSeparateProcess
-   *
    * @dataProvider providerTestFakeDeprecatedSettings
    *
    * @covers ::handleDeprecations
@@ -275,8 +274,6 @@ public function providerTestFakeDeprecatedSettings(): array {
   /**
    * Tests legacy twig_sandbox_* settings.
    *
-   * @runInSeparateProcess
-   *
    * @group legacy
    *
    * @expectedDeprecation The "twig_sandbox_whitelisted_classes" setting is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use "twig_sandbox_allowed_classes" instead. See https://www.drupal.org/node/3162897.