Vite build warnings should be on a new line

[dherault]

Describe the bug

Here's what I witnessed:

As you can see the eval warning is placed right after the build output. It should be on a new line.

Reproduction

https://stackblitz.com/edit/vitejs-vite-ourja9?file=main.js

Steps to reproduce

• Use eval in a project
• Build it with vite build --watch

System Info

System:
    OS: macOS 12.4
    CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
    Memory: 22.16 MB / 16.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 18.6.0 - ~/.nvm/versions/node/v18.6.0/bin/node
    Yarn: 1.22.19 - ~/.nvm/versions/node/v18.6.0/bin/yarn
    npm: 8.13.2 - ~/.nvm/versions/node/v18.6.0/bin/npm
  npmPackages:
    @vitejs/plugin-react: ^2.2.0 => 2.2.0 
    vite: ^3.2.5 => 3.2.5 

Used Package Manager

npm

Logs

No response

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.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to vuejs/core instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[dherault]

Feel free to close as wontfix if this does not bother you.

[patak-dev]

Fixed by #12924