[Flaky Test] x-pack.filebeat.tests.system.test_xpack_modules.XPackTest test_fileset_file_228_aws

## Flaky Test

* **Test Name:** test_fileset_file_228_aws
* **Scope:** x-pack.filebeat.tests.system.test_xpack_modules.XPackTest
* **File:** filebeat/tests/system/test_modules.py
* **Location:** filebeat/tests/system/test_modules.py:143
* **Buildkite Link:** https://buildkite.com/organizations/elastic/analytics/suites/beats/tests/d74f3e57-47f6-8d1e-8e39-9c0972901e15
* **Flaky Instances:** 1
* **Latest Occurrence:** 2026-04-23T17:50:00.916Z

### Details

```json
{
"id": "d74f3e57-47f6-8d1e-8e39-9c0972901e15",
"web_url": "https://buildkite.com/organizations/elastic/analytics/suites/beats/tests/d74f3e57-47f6-8d1e-8e39-9c0972901e15",
"scope": "x-pack.filebeat.tests.system.test_xpack_modules.XPackTest",
"name": "test_fileset_file_228_aws",
"location": "filebeat/tests/system/test_modules.py:143",
"file_name": "filebeat/tests/system/test_modules.py",
"instances": 1,
"latest_occurrence_at": "2026-04-23T17:50:00.916Z",
"most_recent_instance_at": "2026-04-23T17:50:00.916Z",
"last_resolved_at": null,
"ownership_team_ids": [],
"failure_examples": []
}
```

Start with filebeat/tests/system/test_modules.py at line 143 and run or inspect XPackTest.test_fileset_file_228_aws. Use the linked Buildkite test record to investigate the single flaky occurrence; done means the test no longer flakes reliably in system-test runs.

Written by the indexing model from the issue text.