feat(reporter): --silent=passed-only to log failed tasks only

[AriPerkkio]

Description

• Closes Only print captured console.* if a test fails. #6272

Adds --silent=passed-only that can be used to print logs from failing tests only.

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. If the feature is substantial or introduces breaking changes without a discussion, PR might be closed.
• Ideally, include a test that fails without this PR but passes with it.
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Tests

• Run the tests with pnpm test:ci.

Documentation

• If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.

[netlify]

✅ Deploy Preview for vitest-dev ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	ffeef20
🔍 Latest deploy log	https://app.netlify.com/sites/vitest-dev/deploys/67bd809a309d340008dd463f
😎 Deploy Preview	https://deploy-preview-7530--vitest-dev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[hi-ogawa]

I was wondering how you would know whether it's success or failing when logging, but I realized it's buffering till the end --silent=passed-only. Obviously this is the only way, so just note for myself. 😃

[hi-ogawa]

Looks good!

[tony]

Thank you @AriPerkkio! Feel free to rebase if you wish.

@hi-ogawa @sheremet-va Would this be viable to make it in for vitest 3.1?