experimental.bundledDev fails in TanStack Start with Vite Plus

[nestarz]

Which project does this relate to?

Start

Describe the bug

When enabling Vite 8's new full bundle mode via experimental.bundledDev: true inside a TanStack Start architecture, the development server fails if run with vite-plus

Complete minimal reproducer

https://github.com/nestarz/tanstack-start-mre-bundled-dev-vite-plus

Steps to Reproduce the Bug

Run pnpm dev
See error

Expected behavior

Should run without any error and js/css works

Screenshots or Videos

No response

Platform

Router / Start Version: 1.168.13
OS: macOS
Browser: all
Bundler: vite
Bundler: 8.0.0

Additional context

Follow #7436