[Failure Store] Add missing feature flag check in RBACEngineTests (elastic#126215) (elastic#126446)

Resolves elastic#126130

(cherry picked from commit 3affea3)

# Conflicts:
#	muted-tests.yml

Author: slobodanadamovic

muted-tests.yml

@@ -462,4 +462,4 @@ tests:
   issue: https://github.com/elastic/elasticsearch/issues/125905
 - class: org.elasticsearch.docker.test.DockerYmlTestSuiteIT
   method: test {p0=/11_nodes/Test cat nodes output with full_id set}
-  issue: https://github.com/elastic/elasticsearch/issues/125903
+  issue: https://github.com/elastic/elasticsearch/issues/125903

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/security/authz/permission/LimitedRoleTests.java

@@ -14,6 +14,7 @@
 import org.elasticsearch.action.bulk.TransportBulkAction;
 import org.elasticsearch.action.search.TransportSearchAction;
 import org.elasticsearch.cluster.metadata.AliasMetadata;
+import org.elasticsearch.cluster.metadata.DataStream;
 import org.elasticsearch.cluster.metadata.IndexAbstraction;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
 import org.elasticsearch.cluster.metadata.Metadata;
@@ -627,6 +628,7 @@ public void testAllowedActionsMatcher() {
     }
 
     public void testAllowedActionsMatcherWithSelectors() {
+        assumeTrue("failure store feature must be enabled", DataStream.isFailureStoreFeatureFlagEnabled());
         Role fromRole = Role.builder(EMPTY_RESTRICTED_INDICES, "fromRole")
             .add(IndexPrivilege.READ_FAILURE_STORE, "ind*")
             .add(IndexPrivilege.READ, "ind*")

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

@@ -1415,6 +1415,7 @@ public void testBuildUserPrivilegeResponse() {
     }
 
     public void testBuildUserPrivilegeResponseCombinesIndexPrivileges() {
+        assumeTrue("failure store feature must be enabled", DataStream.isFailureStoreFeatureFlagEnabled());
         final BytesArray query = new BytesArray("""
             {"term":{"public":true}}""");
         final Role role = Role.builder(RESTRICTED_INDICES, "test", "role")