test(onboarding): exercise keyboard focus visibility

[BunsDev]

Summary

• drive the setup header focus assertion through a real keyboard Tab transition
• keep the setup-action source contract order-insensitive while preserving every required layout class
• follow up the two Copilot review threads on Simplify setup page chrome #3913 after that PR merged

Verification

• node src/components/onboarding-polish.test.ts
• pnpm exec playwright test tests/onboarding-wizard.spec.ts --grep "keeps setup-header focus indicators" --project=desktop --no-deps --workers=1 --reporter=line
• pnpm typecheck
• pnpm lint
• pnpm check:tests-wired
• git diff --check

[Copilot]

Pull request overview

This PR strengthens onboarding focus-indicator coverage by making the Playwright assertion exercise a real keyboard Tab transition (to trigger :focus-visible), and updates the setup-header source-contract test to be resilient to harmless Tailwind class reordering while still enforcing the required layout classes.

Changes:

• Update the onboarding wizard Playwright spec to reach the “Re-check” button via Tab (keyboard modality) instead of programmatic .focus().
• Make the setup-header contract test order-insensitive by checking for required classes individually rather than matching the full className string.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
tests/onboarding-wizard.spec.ts	Uses a keyboard Tab transition to verify :focus-visible behavior for the setup header action buttons.
src/components/onboarding-polish.test.ts	Switches the setup-header contract from a full-string regex to per-class inclusion checks (order-insensitive).

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