### 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
b.bind(HealthNodeTaskExecutor.class).toInstance(healthNodeTaskExecutor);
                b.bind(HealthMetadataService.class).toInstance(healthMetadataService);
                b.bind(LocalHealthMonitor.class).toInstance(localHealthMonitor);
                b.bind(HealthInfoCache.class).toInstance(nodeHealthOverview);
                b.bind(HealthApiStats.class).toInstance(healthApiStats);
                b.bind(Tracer.class).toInstance(tracer);
                b.bind(FileSettingsService.class).toInstance(fileSettingsService);
                b.bind(WriteLoadForecaster.class).toInstance(writeLoadForecaster);
            });
            if (ReadinessService.enabled(environment)) {
                modules.add(b -> b.bind(ReadinessService.class).toInstance(new ReadinessService(clusterService, environment)));
            }
            injector = modules.createInjector();
            
            
            
            
            
            clusterModule.setExistingShardsAllocators(injector.getInstance(GatewayAllocator.class));
            List<LifecycleComponent> pluginLifecycleComponents = pluginComponents.stream()
                .filter(p -> p instanceof LifecycleComponent)
                .map(p -> (LifecycleComponent) p)
                .toList();
            resourcesToClose.addAll(pluginLifecycleComponents);
            resourcesToClose.add(injector.getInstance(PeerRecoverySourceService.class));
            this.pluginLifecycleComponents = Collections.unmodifiableList(pluginLifecycleComponents);
            
            
            @SuppressWarnings("rawtypes")
            Map<ActionType<? extends ActionResponse>, TransportAction<? extends ActionRequest, ? extends ActionResponse>> actions =