[codex] fix playwright test version mismatch

[sanmaopep]

Summary

• Align @playwright/test declarations in @web-bench/test-util and @web-bench/shop-test-util with the repo-wide 1.57.0 version.
• Refresh Rush pnpm lockfile specifiers after rush update.

Root Cause

• Two utility packages still declared @playwright/test as ^1.56.1, while the rest of the workspace had moved to exact 1.57.0, causing rush update to report a mismatching dependency.

Validation

• rush update
• rush check