### Description

Elasticsearch defines the concept of a [feature](https://www.elastic.co/guide/en/elasticsearch/reference/current/get-features-api.html) for the purpose of better managing them when snapshotting/restoring them via the [feature_states field](https://www.elastic.co/guide/en/elasticsearch/reference/current/create-snapshot-api.html#create-snapshot-api-feature-states)

The `shards_availability` health indicator currently diagnoses the condition of indices needing to be [restored from a snapshot](https://github.com/elastic/elasticsearch/blob/main/server/src/main/java/org/elasticsearch/cluster/routing/allocation/ShardsAvailabilityHealthIndicatorService.java#L138) and recommends a [troubleshooting guide](http://ela.st/restore-snapshot)

However, since `8.x` the restore API **must** use `feature_states` instead of specifying systems indices or system data streams as part of the `indices` field.

This proposes the `affected_resources` for the `restore_from_snapshot` diagnosis return the indices that are not part of a `feature` under the `INDICES` type, and a new type `FEATURES`.
e.g. instead of current behaviour
```
"affected_resources": {
  "indices": [
    ".geoip_databases",
    "test_index"
    ]
}
```
we could return:
```
"affected_resources": {
  "indices": [
    "test_index"
   ], 
  "features": [
     "geoip"
  ]
}
```



server/src/main/java/org/elasticsearch/node/Node.java
logger.info(
                "node name [{}], node ID [{}], cluster name [{}], roles {}",
                NODE_NAME_SETTING.get(tmpSettings),
                nodeEnvironment.nodeId(),
                ClusterName.CLUSTER_NAME_SETTING.get(tmpSettings).value(),
                DiscoveryNode.getRolesFromSettings(settings)
                    .stream()
                    .map(DiscoveryNodeRole::roleName)
                    .collect(Collectors.toCollection(LinkedHashSet::new))
            );
            resourcesToClose.add(nodeEnvironment);
            localNodeFactory = new LocalNodeFactory(settings, nodeEnvironment.nodeId());
            ScriptModule.registerClusterSettingsListeners(scriptService, settingsModule.getClusterSettings());
            final NetworkService networkService = new NetworkService(
                getCustomNameResolvers(pluginsService.filterPlugins(DiscoveryPlugin.class))
            );
            List<ClusterPlugin> clusterPlugins = pluginsService.filterPlugins(ClusterPlugin.class);
            final ClusterService clusterService = new ClusterService(
                settings,
                settingsModule.getClusterSettings(),
                threadPool,
                taskManager
            );
            clusterService.addStateApplier(scriptService);
            resourcesToClose.add(clusterService);
            final Set<Setting<?>> consistentSettings = settingsModule.getConsistentSettings();
            if (consistentSettings.isEmpty() == false) {
                clusterService.addLocalNodeMasterListener(
                    new ConsistentSettingsService(settings, clusterService, consistentSettings).newHashPublisher()
                );