Module resolution regression in v3

[vladkrasn]

Describe the bug

Writing a test that involves an import from @aws-sdk/client-s3 causes errors like:

Cannot find module 'C:\Users\<path-to-folder>\vitest-3-regression\node_modules\@aws-sdk\core\dist-es\submodules\client\index' imported from C:\Users\<path-to-folder>\node_modules\@aws-sdk\core\dist-es\index.js

Reproduction

https://github.com/vladkrasn/vitest-3-regression

npm install
npm run test

Produces the errors.

Switching to v2 using

npm install vitest@2

fixes the issue

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (16) x64 AMD Ryzen 7 9800X3D 8-Core Processor
    Memory: 4.19 GB / 31.10 GB
  Binaries:
    Node: 22.13.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.21 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.9.2 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.10.0 - C:\Program Files\nodejs\pnpm.CMD
  Browsers:
    Edge: Chromium (129.0.2792.65)
    Internet Explorer: 11.0.26100.1882
  npmPackages:
    vitest: ^3.0.0 => 3.0.0

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.

[tsirlucas]

EDIT: removing comment as issue is probably duplication of #7266