Monitoring data can now be stored in `metrics-*` patterns when collected through elastic-agent. [Our documentation](https://www.elastic.co/guide/en/kibana/current/monitoring-data.html) recommends to use the `monitoring_user` role to view the data in Stack Monitoring application but that role does not have permissions to read from the metrics pattern.

`monitoring_user` should be allowed the same permissions on `metrics-*` as `.monitoring-*`
x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authz/RBACEngineTests.java
private RBACEngine engine;
    private CompositeRolesStore rolesStore;
    @Before
    public void createEngine() {
        final LoadAuthorizedIndicesTimeChecker.Factory timerFactory = mock(LoadAuthorizedIndicesTimeChecker.Factory.class);
        when(timerFactory.newTimer(any())).thenReturn(LoadAuthorizedIndicesTimeChecker.NO_OP_CONSUMER);
        rolesStore = mock(CompositeRolesStore.class);
        engine = new RBACEngine(Settings.EMPTY, rolesStore, new FieldPermissionsCache(Settings.EMPTY), timerFactory);
    }
    public void testResolveAuthorizationInfoForEmptyRolesWithAuthentication() {
        doAnswer(invocation -> {
            @SuppressWarnings("unchecked")
            final var listener = (ActionListener<Tuple<Role, Role>>) invocation.getArgument(1);
            listener.onResponse(new Tuple<>(Role.EMPTY, Role.EMPTY));