[Test] Skip testAuthorizeDataStreamFailureIndices for release tests (#126112) (#126184)

Adding a missing feature flag for
`IndicesPermissionTests#testAuthorizeDataStreamFailureIndices` test.

Resolves #125555 Resolves #126040

(cherry picked from commit ea8fd3b)

# Conflicts:
#	muted-tests.yml

Author: slobodanadamovic

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

@@ -364,6 +364,7 @@ public void testAuthorizeDataStreamAccessWithFailuresSelector() {
     }
 
     public void testAuthorizeDataStreamFailureIndices() {
+        assumeTrue("failure store required", DataStream.isFailureStoreFeatureFlagEnabled());
         Metadata.Builder builder = Metadata.builder();
         String dataStreamName = randomAlphaOfLength(6);
         int numBackingIndices = randomIntBetween(1, 3);