### Elasticsearch Version

8.4, 8.5, 8.6

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

Darwin

### Problem Description

The shards availability indicator should always be reporting diagnosis when its status is RED/YELLOW.
However, when an index is on a data node that runs out of disk space it will report RED but no diagnosis.

### Steps to Reproduce

Have multi-node cluster where a data (non-master) node that hosts an index runs out of disk space (the index cannot relocate somewhere else).
Call the Health API and the output will be something along these lines:
```
    "shards_availability": {
      "status": "red",
      "symptom": "This cluster has all shards available.",
      "details": {
        "initializing_primaries": 1,
        "started_replicas": 0,
        "initializing_replicas": 0,
        "unassigned_primaries": 0,
        "started_primaries": 1,
        "creating_primaries": 0,
        "unassigned_replicas": 0,
        "restarting_primaries": 0,
        "restarting_replicas": 0
      },
      "impacts": [
        {
          "id": "elasticsearch:health:shards_availability:impact:primary_unassigned",
          "severity": 1,
          "description": "Cannot add data to 1 index [test_index]. Searches might return incomplete results.",
          "impact_areas": [
            "ingest",
            "search"
          ]
        }
      ] 
    }
``` 

### Logs (if relevant)

_No response_
server/src/test/java/org/elasticsearch/cluster/routing/allocation/ShardsAvailabilityHealthIndicatorServiceTests.java
)
                    )
                )
            )
        );
    }
    public void testDiagnoseRestoreIndexAfterDataLoss() {
        
        IndexMetadata indexMetadata = IndexMetadata.builder("red-index")
            .settings(Settings.builder().put(IndexMetadata.SETTING_VERSION_CREATED, Version.CURRENT).build())
            .numberOfShards(1)
            .numberOfReplicas(0)
            .build();
        ShardRouting shardRouting = createShardRouting(
            new ShardId(indexMetadata.getIndex(), 0),
            true,
            new ShardAllocation(randomNodeId(), UNAVAILABLE, noShardCopy())
        );
        var service = createShardsAvailabilityIndicatorService();
        List<Diagnosis.Definition> definitions = service.diagnoseUnassignedShardRouting(shardRouting, ClusterState.EMPTY_STATE);
        assertThat(definitions, hasSize(1));
        assertThat(definitions, contains(ACTION_RESTORE_FROM_SNAPSHOT));
    }
    public void testRestoreFromSnapshotReportsFeatureStates() {
        
        
        
        IndexMetadata featureIndex = IndexMetadata.builder(".feature-index")
            .settings(Settings.builder().put(IndexMetadata.SETTING_VERSION_CREATED, Version.CURRENT).build())
            .numberOfShards(1)