chore(deps): upgrade cypress visual regression plugin to v4.2.0

[FRSgit]

Related issue

n/a

Scope of work

• Bump @frsource/cypress-plugin-visual-regression-diff from 3.3.10 to 4.2.0 in apps/test/vue and apps/test/react.
• Make the two SfBadge max-value tests static. They used Math.random() in the test title, so every run created a fresh visual regression baseline instead of comparing against the existing one.

Notes on the v4 upgrade:

• No baseline migration needed: snapshots are not committed in this repo (synced test folders are gitignored and cleaned before each run), so the v4 attempt-separator rename (name #0.png -> name_#0.png) has no effect here.
• On Cypress 13 the plugin keeps reading options from env; the Cypress.expose change in 4.1 only applies from Cypress 15.10. No config changes required.
• The plugin now depends on sharp 0.35.x, but the root resolutions pin keeps it at 0.33.0 (shared with Next). The plugin only uses resize/toFile, which work fine on 0.33.0.

Verified locally on Chrome headless:

Run	Result
Vue, fresh baselines	221 passed
React, fresh baselines	221 passed
Vue, second run comparing against baselines	221 passed, no diff files
SfBadge spec, two consecutive runs	same 12 baselines both times

Screenshots of visual changes

n/a

Checklist

• Self code-reviewed
• Changes documented
• Semantic HTML
• SSR-friendly
• Caching friendly
• a11y for WCAG 2.0 AA
• examples created
• blocks created
• cypress tests created

🤖 Generated with Claude Code

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Latest commit: e2911de

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