The `using` keyword cannot be used within `.svelte` files

[kran6a]

Describe the bug

The using keyword seems to be unsupported within .svelte files.

Reproduction URL

https://stackblitz.com/edit/vitejs-vite-jnn3rq

Reproduction

No response

Logs

No response

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (12) x64 AMD Ryzen 5 3600XT 6-Core Processor            
    Memory: 16.13 GB / 63.93 GB
  Binaries:
    Node: 22.5.1 - C:\Program Files\nodejs\node.EXE
    npm: 10.8.2 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.6.0 - C:\Program Files\nodejs\pnpm.CMD
    bun: 1.1.21 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.22621.3527
  npmPackages:
    @sveltejs/adapter-static: ^3.0.2 => 3.0.2
    @sveltejs/kit: ^2.5.18 => 2.5.18
    @sveltejs/vite-plugin-svelte: ^3.1.1 => 3.1.1
    svelte: 5.0.0-next.201 => 5.0.0-next.201
    vite: ^5.3.5 => 5.3.5