[Stack 9.4.0-SNAPSHOT] [hostmetrics_input_otel] Failing test daily: system test: default in hostmetrics_input_otel.

- Stack version: 9.4.0-SNAPSHOT
- Package: hostmetrics_input_otel
- Failing test: system test: default
- Owners:
- @elastic/obs-infraobs-integrations

Error:
```
failed to search docs for data stream metrics-hostmetricsreceiver.otel-16296: [500 Internal Server Error] {"error":{"root_cause":[{"type":"array_index_out_of_bounds_exception","reason":"Index 28 out of bounds for length 28"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":".ds-metrics-hostmetricsreceiver.otel-16296-2026.03.30-000001","node":"gO5bAvnvTfefAV96lUDi2Q","reason":{"type":"array_index_out_of_bounds_exception","reason":"Index 28 out of bounds for length 28"}}],"caused_by":{"type":"array_index_out_of_bounds_exception","reason":"Index 28 out of bounds for length 28","caused_by":{"type":"array_index_out_of_bounds_exception","reason":"Index 28 out of bounds for length 28"}}},"status":500}
```

First build failed: https://buildkite.com/elastic/integrations/builds/40134

Latest failed builds:
- https://buildkite.com/elastic/integrations/builds/40229
- https://buildkite.com/elastic/integrations/builds/40485
- https://buildkite.com/elastic/integrations/builds/40498