[Bug](vite): limiting subset does not affect variable fonts (@fontsource-variable/roboto)

[aentwist]

Demo URL

No response

What happened?

I am using @fontsource-variable/roboto, and the vite plugin with the following config:

    ViteFonts({
      fontsource: {
        families: [
          {
            name: "Roboto",
            subset: "latin",
            variable: {
              wght: true, // Enable weight axis
              ital: true, // Italic
            },
          },
        ],
      },
    }),

Even though I limit subset to latin, all others are still included.

    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-cyrillic-wght-italic-BQuZY0ec.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-cyrillic-ext-wght-italic-B-UKatGS.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-greek-ext-wght-italic-Cf6Wh-ak.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-greek-wght-italic-NsgT4ukU.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-symbols-wght-italic-mQQU5nC4.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-math-wght-italic-Dwush0cz.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-vietnamese-wght-italic-LqXHS6oa.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-latin-ext-wght-italic-cqKqHPSO.woff2" crossorigin="anonymous">
    <link rel="preload" as="font" type="font/woff2" href="/assets/roboto-latin-wght-italic-HlDuTyNj.woff2" crossorigin="anonymous">

Reproduction steps

1. install fontsource roboto variable (separates subset by file)
2. use vite plugin with latin subset
3. build and verify

Relevant log output

$ npm run build
vite v7.2.7 building client environment for production...
✓ 2150 modules transformed.
dist/index.html                                                 1.64 kB │ gzip:   0.47 kB
dist/assets/roboto-greek-ext-wght-italic-Cf6Wh-ak.woff2         4.47 kB
dist/assets/roboto-vietnamese-wght-italic-LqXHS6oa.woff2       13.96 kB
dist/assets/roboto-greek-wght-italic-NsgT4ukU.woff2            18.80 kB
dist/assets/roboto-symbols-wght-italic-mQQU5nC4.woff2          22.29 kB
dist/assets/roboto-cyrillic-wght-italic-BQuZY0ec.woff2         24.57 kB
dist/assets/roboto-latin-ext-wght-italic-cqKqHPSO.woff2        28.54 kB
dist/assets/roboto-cyrillic-ext-wght-italic-B-UKatGS.woff2     39.53 kB
dist/assets/roboto-latin-wght-italic-HlDuTyNj.woff2            44.19 kB
dist/assets/roboto-math-wght-italic-Dwush0cz.woff2             44.41 kB

What browsers are you seeing the problem on?

No response

What is your operating system?

Linux