fix(kv-store): lazy-load skipped browser benchmark deps

[AztecBot]

Summary

• Investigated the merge-train/spartan-v5 dequeue for train PR feat: merge-train/spartan-v5 #24053.
• Latest dequeue was from merge-group CI, not a merge conflict: feat: merge-train/spartan-v5 #24053 is currently mergeable/clean on merge-train/spartan-v5.
• The failing merge-group run was 27576008840 on gh-readonly-queue/v5-next/pr-24053-fc2322d6..., failing ci/x3-full via yarn-project/kv-store/scripts/run_test.sh src/bench/sqlite-opfs-encrypted/map_bench.test.ts.
• Root cause: skipped-by-default browser benchmarks still imported SQLite/OPFS and shared benchmark dependencies at module load, so normal CI test discovery could fail before the describe.skip path.
• Fix: lazy-load benchmark dependencies only when VITE_BENCH=1 for the IndexedDB, SQLite-OPFS, and encrypted SQLite-OPFS map benchmarks.

Failed dashboard log: http://ci.aztec-labs.com/dbe70cb905f2df69

Verification

• CI=1 PATH="$HOME/.cargo/bin:$PATH" scripts/run_test.sh src/bench/sqlite-opfs-encrypted/map_bench.test.ts from yarn-project/kv-store passes with the benchmark skipped.
• CI=1 PATH="$HOME/.cargo/bin:$PATH" scripts/run_test.sh src/bench/sqlite-opfs/map_bench.test.ts passes with the benchmark skipped.
• CI=1 PATH="$HOME/.cargo/bin:$PATH" scripts/run_test.sh src/bench/indexeddb/map_bench.test.ts passes with the benchmark skipped.
• yarn format kv-store --check passes.

Notes: the requested root ./bootstrap.sh ci is not a valid bootstrap command in this checkout (Unknown command: ci). I also tried the apparent CI equivalent, ./bootstrap.sh ci-full-no-test-cache; it did not complete in this container because the local CI engine/tooling failed before reaching these tests.

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Created by claudebox · group: slackbot