Failed to resolve entry for package "@sveltejs/package".

Describe the bug

See the video!
The error happens when update to latest version (0.34.1).

https://github.com/vitest-dev/vitest/assets/130963/4d1bd2fa-bcde-4adf-ae5b-cf6440d73d16

Reproduction

I don't know if it's just a sveltekit problem.
To get the error, update vitest to latest version (0.34.1).

Example:

Open the link and run:

npm test

System Info

System:
    OS: macOS 13.3.1
    CPU: (12) x64 Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz
    Memory: 628.38 MB / 32.00 GB
    Shell: 3.5.1 - /usr/local/bin/fish
  Binaries:
    Node: 18.16.0 - /usr/local/bin/node
    Yarn: 1.22.19 - ~/.npm-global/bin/yarn
    npm: 9.7.1 - ~/.npm-global/bin/npm
    pnpm: 8.6.0 - ~/.npm-global/bin/pnpm
  Browsers:
    Chrome: 115.0.5790.170
    Chrome Canary: 117.0.5928.0
    Safari: 16.4

### Used Package Manager

pnpm

### Validations

- [X] Follow our [Code of Conduct](https://github.com/vitest-dev/vitest/blob/main/CODE_OF_CONDUCT.md)
- [X] Read the [Contributing Guidelines](https://github.com/vitest-dev/vitest/blob/main/CONTRIBUTING.md).
- [X] Read the [docs](https://vitest.dev/guide/).
- [X] Check that there isn't [already an issue](https://github.com/vitest-dev/vitest/issues) that reports the same bug to avoid creating a duplicate.
- [X] Check that this is a concrete bug. For Q&A open a [GitHub Discussion](https://github.com/vitest-dev/vitest/discussions) or join our [Discord Chat Server](https://chat.vitest.dev).
- [X] The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.

Open the linked StackBlitz reproduction and inspect package.json, then run npm test with Vitest 0.34.1 and compare it with 0.33.0. Done means the SvelteKit reproduction no longer fails to resolve @sveltejs/package after updating Vitest.