[Failure Store] Feature-flag test (#125591) (#125651)

Closes: https://github.com/elastic/elasticsearch/issues/12555

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authz/accesscontrol/IndicesPermissionTests.java

@@ -184,6 +184,8 @@ public class IndicesPermissionTests extends ESTestCase {
     }
 
     public void testAuthorizeDataStreamAccessWithFailuresSelector() {
+        assumeTrue("failure store required", DataStream.isFailureStoreFeatureFlagEnabled());
+
         Metadata.Builder builder = Metadata.builder();
         String dataStreamName = randomAlphaOfLength(6);
         int numBackingIndices = randomIntBetween(1, 3);