### 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
private final NodeService nodeService;
    
    final NamedWriteableRegistry namedWriteableRegistry;
    final NamedXContentRegistry namedXContentRegistry;
    /**
     * Constructs a node
     *
     * @param environment         the initial environment for this node, which will be added to by plugins
     */
    public Node(Environment environment) {
        this(environment, PluginsService.getPluginsServiceCtor(environment), true);
    }
    /**
     * Constructs a node
     *
     * @param initialEnvironment         the initial environment for this node, which will be added to by plugins
     * @param pluginServiceCtor          a function that takes a {@link Settings} object and returns a {@link PluginsService}
     * @param forbidPrivateIndexSettings whether or not private index settings are forbidden when creating an index; this is used in the
     *                                   test framework for tests that rely on being able to set private settings
     */
    protected Node(
        final Environment initialEnvironment,
        final Function<Settings, PluginsService> pluginServiceCtor,
        boolean forbidPrivateIndexSettings
    ) {
        final List<Closeable> resourcesToClose = new ArrayList<>(); 
        boolean success = false;
        try {
            
            DeprecationLogger.initialize(initialEnvironment.settings());