Resolves#33254
This can be reproduced locally by running the following "high load"
test:
Run 500 hosts using osquery-perf:
```
go run ./cmd/osquery-perf --enroll_secret ... \
--host_count 500 \
--server_url https://localhost:8080 \
--live_query_fail_prob 0.0 \
--live_query_no_results_prob 0.0 \
--orbit_prob 0.0 \
--http_message_signature_prob 0.0
```
Run `stress_test_live_queries.sh`:
```
#!/bin/bash
while true; do
curl -v -k -X POST -H "Authorization: Bearer $TEST_TOKEN" https://localhost:8080/api/latest/fleet/queries/$SAVED_QUERY_ID/run -d '{"host_ids": [<500 comma-separated host ids>]}'
done
```
Use "Redis Insight" or the like and you will start to see
`livequery:{$CAMPAIGN_ID}` keys with `No limit` (which is the bug):
<img width="1380" height="227" alt="Screenshot 2025-10-07 at 3 10 26 PM"
src="https://github.com/user-attachments/assets/30434348-3217-40c4-8ebc-bab5ceb4daa9"
/>
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- Bug Fixes
- Prevent lingering Redis keys for live queries by ensuring keys are
cleaned up and not recreated when completing/canceling non-existent
queries.
- Improves resource usage and avoids stale state in live query
processing.
- Tests
- Added tests verifying proper retrieval/completion behavior and that no
Redis key is created for non-existent live queries.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Ian Littman <iansltx@gmail.com>
