Issue #2866252 by arshadcn, rakesh.gectcr: Refactor...

Issue #2866252 by arshadcn, rakesh.gectcr: Refactor \Drupal\Tests\rest\Functional\EntityResource\Block\BlockResourceTestBase::getExpectedCacheTags

core/modules/rest/tests/src/Functional/EntityResource/Block/BlockResourceTestBase.php

@@ -122,9 +122,7 @@ protected function getExpectedCacheContexts() {
   protected function getExpectedCacheTags() {
     // Because the 'user.permissions' cache context is missing, the cache tag
     // for the anonymous user role is never added automatically.
-    return array_values(array_filter(parent::getExpectedCacheTags(), function ($tag) {
-      return $tag !== 'config:user.role.anonymous';
-    }));
+    return array_values(array_diff(parent::getExpectedCacheTags(), ['config:user.role.anonymous']));
   }
 
   /**