vitest 4.1.2 on Node.js Yarn

This release bumps Vitest's flatted version and removes version pinning to resolve flatted's CVE related issues (#9975).

Don't resolve setupFiles from parent directory - by @hi-ogawa in #9960 (7aa93)
Ensure sequential mock/unmock resolution - by @hi-ogawa and Claude Opus 4.6 in #9830 (7c065)
browser: Take failure screenshot if toMatchScreenshot can't capture a stable screenshot - by @macarie in #9847 (faace)
coverage: Correct coverageConfigDefaults values and types - by @Arthie in #9940 (b3c99)
pretty-format: Fix output limit over counting - by @hi-ogawa in #9965 (d3b7a)
Disable colors if agent is detected - by @sheremet-va and @AriPerkkio in #9851 (6f97b)

vitest 4.1.2
v4.1.2

on Node.js Yarn