[TEST] Mute failing tests in NativeRealmInteg and ReservedRealmInteg

Tracking issue: #31670

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/esnative/NativeRealmIntegTests.java

@@ -590,6 +590,7 @@ public class NativeRealmIntegTests extends NativeRealmIntegTestCase {
         assertThat(response.roles()[0].getName(), is(name));
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/31670")
     public void testCreateAndChangePassword() throws Exception {
         securityClient().preparePutUser("joe", "s3krit".toCharArray(), getFastStoredHashAlgoForTests(),
             SecuritySettingsSource.TEST_ROLE).get();

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/esnative/ReservedRealmIntegTests.java

@@ -61,6 +61,7 @@ public class ReservedRealmIntegTests extends NativeRealmIntegTestCase {
         }
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/31670")
     public void testChangingPassword() {
         String username = randomFrom(ElasticUser.NAME, KibanaUser.NAME, LogstashSystemUser.NAME, BeatsSystemUser.NAME);
         final char[] newPassword = "supersecretvalue".toCharArray();