Only augment `vue`, not sub-packages

[abaza738]

Describe the bug

Issue discussed in #28542. Possibly solves issue in this comment.

Reproduction

https://github.com/nuxt/nuxt/pull/28542

System Info

Binaries:
    Node: 20.16.0 - ~/.nvm/versions/node/v20.16.0/bin/node
    npm: 10.8.1 - ~/.nvm/versions/node/v20.16.0/bin/npm
    pnpm: 9.9.0 - ~/repos/qarar/node_modules/.bin/pnpm
  Browsers:
    Chrome: 128.0.6613.137

Used Package Manager

pnpm

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• [X] Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• [X] The provided reproduction is a minimal reproducible of the bug.