update with-vitest from vite 5 to 6

[birkskyum]

it's not showcased by the example, but vitest browser mode is enabled by this for solid-start too

[changeset-bot]

⚠️ No Changeset found

Latest commit: 0fbd4a5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[netlify]

❌ Deploy Preview for solid-start-landing-page failed. Why did it fail? →

Name	Link
🔨 Latest commit	081471c
🔍 Latest deploy log	https://app.netlify.com/sites/solid-start-landing-page/deploys/67bfd691bc283b00079a49c2

[pkg-pr-new]

Open in Stackblitz

More templates

• example-bare
• example-basic
• example-experiments
• example-hackernews
• example-notes
• example-todomvc
• example-with-auth
• example-with-authjs
• example-with-drizzle
• example-with-mdx
• example-with-prisma
• example-with-solid-styled
• example-with-tailwindcss
• with-tanstack-router
• example-with-trpc
• example-with-unocss
• example-with-vitest

npm i https://pkg.pr.new/@solidjs/start@1835

commit: 081471c