### Elasticsearch Version

8.4

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

any

### Problem Description

unsigned_long field type doesn't work with function_score decay functions, and produces an error:

```
"type" : "parsing_exception",
"reason" : "field [unsigned_long_test] is of type [org.elasticsearch.xpack.unsignedlong.UnsignedLongFieldMapper$UnsignedLongFieldType@10281e68], but only numeric types are supported."
```



### Steps to Reproduce


**1. Create index**
```
PUT numeric-test-mapping
{
  "mappings": {
    "properties": {
      "double_test": {
        "type": "double"
      },
      "unsigned_long_test": {
        "type": "unsigned_long"
      },
      "long_test": {
        "type": "long"
      }
    }
  }
}
```

**2. Create documents with numeric values for the 3 different fields**
```
POST numeric-test-mapping/_doc/
{
  "double_test": 10, 
  "unsigned_long_test": 10,
  "long_test": 10
}
POST numeric-test-mapping/_doc/
{
  "double_test": 11, 
  "unsigned_long_test": 11,
  "long_test": 11
}

POST numeric-test-mapping/_doc/
{
  "double_test": 12, 
  "unsigned_long_test": 12,
  "long_test": 12
}
```

**3. Run search on index created**
```
GET numeric-test-mapping/_search 
{
  "from": 0,
  "size": 10,
  "query": {
    "function_score": {
    "functions": [
        {
            "gauss":{
                "unsigned_long_test":{
                  "scale": 1,
                  "origin": 0
                }
            }
        }]
    }
  }
}
```

### Logs (if relevant)

_No response_
server/src/main/java/org/elasticsearch/index/query/functionscore/DecayFunctionBuilder.java
private final GeoPoint origin;
        private final IndexGeoPointFieldData fieldData;
        private static final GeoDistance distFunction = GeoDistance.ARC;
        GeoFieldDataScoreFunction(
            GeoPoint origin,
            double scale,
            double decay,
            double offset,
            DecayFunction func,
            IndexGeoPointFieldData fieldData,
            MultiValueMode mode
        ) {
            super(scale, decay, offset, func, mode);
            this.origin = origin;
            this.fieldData = fieldData;
        }
        @Override
        public boolean needsScores() {
            return false;
        }
        @Override
        protected NumericDoubleValues distance(LeafReaderContext context) {
            final MultiGeoPointValues geoPointValues = fieldData.load(context).getPointValues();
            return FieldData.replaceMissing(mode.select(new SortingNumericDoubleValues() {
                @Override