docs: update query benchmarks (3.0.4)

[github-actions]

Automated query benchmark update for 3.0.4 from workflow run #221.

[greptile-apps]

Greptile Summary

This is an automated documentation-only PR that appends query benchmark results for version 3.0.4 to generated/benchmarks/QUERY-BENCHMARKS.md. It follows the established pattern of release-triggered benchmark updates.

Changes made:

• Adds two new rows to the summary table for 3.0.4 (native and wasm engines), with correct ↑5% delta on native diffImpact (7.5ms → 7.9ms) and ~ (no change) on wasm diffImpact (7ms → 7ms).
• Updates the "Latest results" section header to version 3.0.4 / date 2026-03-06.
• Changes the mid benchmark target from targets to self for both engines — this reflects an updated hub topology in the graph after the 3.0.4 release.
• Prepends a new JSON entry to the embedded QUERY_BENCHMARK_DATA comment block; all field values are consistent with the human-readable table above.
• No functional code changes; all benchmark data is internally consistent across all sections.

Confidence Score: 5/5

• This PR is safe to merge — it is a documentation-only automated benchmark update with no functional code changes.
• The PR touches only a single generated Markdown file with routine benchmark data. All numeric values are internally consistent between the summary table, the "Latest results" section, and the embedded JSON data block. The percentage deltas are mathematically correct. No logic, source code, or configuration is modified. This follows the established pattern seen in prior benchmark releases (3.0.0–3.0.3).
• No files require special attention.

_{Last reviewed commit: b9f0ae7}