Unnecessary file splitting occurs after the build

[Brain777777]

Describe the bug

This PR affects unwanted imports and unnecessary file splits after the build , The problem will be displayed in the dist directory of the repository
#7909

Reproduction

https://github.com/Brain777777/vite-build-lib

System Info

System:
    OS: Windows 10 10.0.22000
    CPU: (16) x64 AMD Ryzen 7 4800H with Radeon Graphics
    Memory: 4.30 GB / 15.87 GB
  Binaries:
    Node: 16.15.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.5 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
    npm: 8.5.5 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.22000.120.0), Chromium (103.0.1264.77)
    Internet Explorer: 11.0.22000.120
  npmPackages:
    @vitejs/plugin-vue: ^3.0.0 => 3.0.1
    vite: ^3.0.0 => 3.0.4

Used Package Manager

pnpm

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.

[sapphi-red]

This is expected because you are using preserveModules: true.
https://github.com/Brain777777/vite-build-lib/blob/6d6c91191b80fbf086c7c582eddf2fe7008bba17/vite.config.ts#L18