fix(frontend): scope logs existence probes by time range

[Levi-Wu-777]

Summary

This updates the Logs page SDK existence probes to use the currently selected time range.

The traces/spans tab already applies fromTime / toTime to the main table, stats, and CSV export queries, but its size=1 existence probe did not include those fields. The threads tab had the same gap. On large projects, those probes can scan all historical SDK traces/threads even when the user is looking at a bounded range such as past 24 hours.

Fixes #7298.

Changes

• Pass fromTime: intervalStart and toTime: intervalEnd to the traces/spans SDK existence probe.
• Pass fromTime: intervalStart and toTime: intervalEnd to the threads SDK existence probe.

Testing

• cd apps/opik-frontend && npm ci
• cd apps/opik-frontend && npm run typecheck
• cd apps/opik-frontend && npm run lint

[andrescrz]

Hi @Levi-Hope

Thanks a lot for taking the time to put this together and contribute to the project—we really appreciate it.

We're going to close this PR for now. We actually tried a very similar approach in the past, but ended up having to revert it because it introduced more performance issues.

The good news is that we already have a different solution that's nearly ready to merge and addresses the same underlying problem: #7378.

Thanks again for the contribution and for helping improve Opik. Even though we won't be moving forward with this particular change, we really appreciate your effort and hope you'll continue contributing in the future.