### Elasticsearch Version

7.17.6, 8.x

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

Doesn't depend on the OS Version

### Problem Description

The Grok processor in the elasticsearch ingest pipelines does not extract multiple value that match a group but only the first one.

For example the following Grok expression:
```
^%{IPORHOST:source.address} (%{IPORHOST:source.address} )?
```

when given the following input:
```
"127.0.0.1 127.0.0.2"
```

It should match both values and not only the first one.

### Steps to Reproduce

```
POST /_ingest/pipeline/_simulate
{
  "pipeline": {
    "description": "_description",
    "processors": [
      {
        "grok": {
          "field": "message",
          "patterns": [
            "^%{IPORHOST:source.address} (%{IPORHOST:source.address} )?"
          ]
        }
      }
    ]
  },
  "docs": [
    {
      "_index": "index",
      "_id": "id",
      "_source": {
        "message": "82.10.222.126 192.168.10.1"
      }
    }
  ]
}
```

The `source.addresses` in the response is:
```
{
  "docs": [
    {
      "doc": {
        "_index": "index",
        "_id": "id",
        "_version": "-3",
        "_source": {
          "message": "82.10.222.126 192.168.10.1",
          "apache": {
            "access": {
              "user": {
                "identity": "jean"
              }
            }
          },
          "source": {
            "address": "82.10.222.126"
          }
        },
        "_ingest": {
          "timestamp": "2022-12-01T09:10:24.439912308Z"
        }
      }
    }
  ]
}
```

While the expected value of `source.address` is:
```
{
  "docs": [
    {
      "doc": {
        "_index": "index",
        "_id": "id",
        "_version": "-3",
        "_source": {
          "message": "82.10.222.126 192.168.10.1",
          "apache": {
            "access": {
              "user": {
                "identity": "jean"
              }
            }
          },
          "source": {
            "address": [
              "82.10.222.126",
              "192.168.10.1"
            ]
          }
        },
        "_ingest": {
          "timestamp": "2022-12-01T09:10:24.439912308Z"
        }
      }
    }
  ]
}

### Logs (if relevant)

_No response_
libs/grok/src/main/java/org/elasticsearch/grok/GrokCaptureType.java
};
    abstract <T> T nativeExtracter(int[] backRefs, NativeExtracterMap<T> map);
    static GrokCaptureType fromString(String str) {
        return switch (str) {
            case "string" -> STRING;
            case "int" -> INTEGER;
            case "long" -> LONG;
            case "float" -> FLOAT;
            case "double" -> DOUBLE;
            case "boolean" -> BOOLEAN;
            default -> STRING;
        };
    }
    protected final GrokCaptureExtracter rawExtracter(int[] backRefs, Consumer<? super String> emit) {
        return new GrokCaptureExtracter() {
            @Override
            void extract(byte[] utf8Bytes, int offset, Region region) {
                for (int number : backRefs) {
                    if (region.beg[number] >= 0) {
                        int matchOffset = offset + region.beg[number];
                        int matchLength = region.end[number] - region.beg[number];
                        emit.accept(new String(utf8Bytes, matchOffset, matchLength, StandardCharsets.UTF_8));
                        return; 
                    }
                }
            }
        };
    }
}