### 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/test/java/org/elasticsearch/grok/GrokTests.java
assertCaptureConfig(grok, Map.of("timestamp", STRING));
        Map<String, Object> matches = grok.captures(line);
        assertEquals("12-12-12 12:12:12", matches.get("timestamp"));
    }
    public void testNilCoercedValues() {
        testNilCoercedValues(false);
        testNilCoercedValues(true);
    }
    private void testNilCoercedValues(boolean ecsCompatibility) {
        Grok grok = new Grok(Grok.getBuiltinPatterns(ecsCompatibility), "test (N/A|%{BASE10NUM:duration:float}ms)", logger::warn);
        assertCaptureConfig(grok, Map.of("duration", FLOAT));
        Map<String, Object> matches = grok.captures("test 28.4ms");
        assertEquals(28.4f, matches.get("duration"));
        matches = grok.captures("test N/A");
        assertEquals(null, matches.get("duration"));
    }
    public void testNilWithNoCoercion() {
        testNilWithNoCoercion(false);
        testNilWithNoCoercion(true);
    }
    private void testNilWithNoCoercion(boolean ecsCompatibility) {
        Grok grok = new Grok(Grok.getBuiltinPatterns(ecsCompatibility), "test (N/A|%{BASE10NUM:duration}ms)", logger::warn);
        assertCaptureConfig(grok, Map.of("duration", STRING));
        Map<String, Object> matches = grok.captures("test 28.4ms");
        assertEquals("28.4", matches.get("duration"));
        matches = grok.captures("test N/A");
        assertEquals(null, matches.get("duration"));
    }
    public void testUnicodeSyslog() {
        testUnicodeSyslog(false);