Problematic syntax highlighting with VitePress markdown files

[rileychh]

Vue - Official extension or vue-tsc version

2.0.28

VSCode version

1.92.2

Vue version

3.4.38

TypeScript version

5.5.4

System Info

System:
  OS: Linux 6.10 Arch Linux
  CPU: (16) x64 Intel(R) Core(TM) i5-14400
  Memory: 13.31 GB / 31.09 GB
  Container: Yes
  Shell: 3.7.1 - /usr/bin/fish
Binaries:
  Node: 20.17.0 - /usr/bin/node
  npm: 10.8.2 - /usr/bin/npm
  pnpm: 9.9.0 - /usr/bin/pnpm
Browsers:
  Chromium: 128.0.6613.84

Steps to reproduce

1. Create a project with npx vitepress init
2. Configure tsconfig.json and .vscode/config.json as told in feat: redesign additional extensions, VitePress, PetiteVue support #4321
3. Add <script setup> block to index.md
4. Check syntax highlighting of index.md

What is expected?

The syntax highlighting in the <script setup> block is correctly rendered.

What is actually happening?

The syntax highlighting for the <script setup> block in the Markdown file is misaligned.

Link to minimal reproduction

https://github.com/rileychh/vitepress-vue-tsc-repro

Any additional comments?

No response