### 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
);
        static final EnumSet<Property> ALL_ASN_PROPERTIES = EnumSet.of(
            Property.IP,
            Property.ASN,
            Property.ORGANIZATION_NAME,
            Property.NETWORK
        );
        public static Property parseProperty(String databaseType, String value) {
            Set<Property> validProperties = EnumSet.noneOf(Property.class);
            if (databaseType.endsWith(CITY_DB_SUFFIX)) {
                validProperties = ALL_CITY_PROPERTIES;
            } else if (databaseType.endsWith(COUNTRY_DB_SUFFIX)) {
                validProperties = ALL_COUNTRY_PROPERTIES;
            } else if (databaseType.endsWith(ASN_DB_SUFFIX)) {
                validProperties = ALL_ASN_PROPERTIES;
            }
            try {
                Property property = valueOf(value.toUpperCase(Locale.ROOT));
                if (validProperties.contains(property) == false) {
                    throw new IllegalArgumentException("invalid");
                }
                return property;
            } catch (IllegalArgumentException e) {
                throw new IllegalArgumentException(
                    "illegal property value [" + value + "]. valid values are " + Arrays.toString(validProperties.toArray())
                );
            }
        }
    }
    static class DatabaseUnavailableProcessor extends AbstractProcessor {