### Elasticsearch Version

8.2.0

### Installed Plugins

_No response_

### Java Version

18

### OS Version

Linux (Docker)

### Problem Description

The geoip ingest processor adds a `_geoip_database_unavailable_*` tag field to documents when the database cannot be downloaded, even if the source field does not exist and `ignore_missing` is set.

### Steps to Reproduce

1. Run Elasticsearch with `ingest.geoip.downloader.enabled=false`
2. Execute the following request in the console:

```
POST /_ingest/pipeline/_simulate
{
  "pipeline": {
    "processors": [
      {
        "geoip": {
          "field": "client.ip",
          "target_field": "client.geo",
          "ignore_missing": true
        }
      }
    ]
  },
  "docs": [
    {
      "_index": "index",
      "_source": {}
    },
    {
      "_index": "index",
      "_source": {"client": {"ip": "8.8.8.8"}}
    }
  ]
}
```

This produces:

```
{
  "docs" : [
    {
      "doc" : {
        "_index" : "index",
        "_id" : "_id",
        "_source" : {
          "tags" : [
            "_geoip_database_unavailable_GeoLite2-City.mmdb"
          ]
        },
        "_ingest" : {
          "timestamp" : "2022-06-03T02:33:16.49692803Z"
        }
      }
    },
    {
      "doc" : {
        "_index" : "index",
        "_id" : "_id",
        "_source" : {
          "client" : {
            "ip" : "8.8.8.8"
          },
          "tags" : [
            "_geoip_database_unavailable_GeoLite2-City.mmdb"
          ]
        },
        "_ingest" : {
          "timestamp" : "2022-06-03T02:33:16.496934873Z"
        }
      }
    }
  ]
}
```

I would expect only the second document to have the tag added.

### Logs (if relevant)

_No response_
modules/ingest-geoip/src/main/java/org/elasticsearch/ingest/geoip/GeoIpProcessor.java
String getTargetField() {
        return targetField;
    }
    String getDatabaseType() throws IOException {
        return supplier.get().getDatabaseType();
    }
    Set<Property> getProperties() {
        return properties;
    }
    private Map<String, Object> retrieveCityGeoData(DatabaseReaderLazyLoader lazyLoader, InetAddress ipAddress) {
        CityResponse response = lazyLoader.getCity(ipAddress);
        if (response == null) {
            return Map.of();
        }
        Country country = response.getCountry();
        City city = response.getCity();
        Location location = response.getLocation();
        Continent continent = response.getContinent();
        Subdivision subdivision = response.getMostSpecificSubdivision();
        Map<String, Object> geoData = new HashMap<>();
        for (Property property : this.properties) {
            switch (property) {
                case IP -> geoData.put("ip", NetworkAddress.format(ipAddress));
                case COUNTRY_ISO_CODE -> {
                    String countryIsoCode = country.getIsoCode();
                    if (countryIsoCode != null) {
                        geoData.put("country_iso_code", countryIsoCode);
                    }
                }
                case COUNTRY_NAME -> {