[🐞] No longer able to extend config for express/fastify with qwik 1.8.0

[nelsonprsousa]

Which component is affected?

Qwik Rollup / Vite plugin

Describe the bug

It is no longer possible to extend vite configuration for express / fastify on qwik v1.8.0. The last known working version was v1.7.1.

Reproduction

https://github.com/nelsonprsousa/qwik-1.8.0-regression

Steps to reproduce

Run yarn create qwik followed by yarn run qwik add express

System Info

System:
    OS: Windows 11 10.0.22621
    CPU: (16) x64 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz
    Memory: 35.02 GB / 63.72 GB
  Binaries:
    Node: 21.7.3 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.19 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.5.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 8.15.4 - C:\Program Files\nodejs\pnpm.CMD
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.22621.3527
  npmPackages:
    @builder.io/qwik: ^1.8.0 => 1.8.0
    @builder.io/qwik-city: ^1.8.0 => 1.8.0
    typescript: 5.4.5 => 5.4.5
    undici: * => 6.19.7
    vite: 5.3.5 => 5.3.5

Additional Information

No response