Modifiers skip missing translation keys

[heohex]

Reporting a bug?

When we using modifier with missing translation key. Modifier return empty string.
Missing option doesn't help.

Expected behavior

Modifier return missing transition key or modificated text if missing exist.

Reproduction

Minimal reproduction link: https://stackblitz.com/edit/vitejs-vite-ffunv1zp?file=src%2Fmain.ts,src%2Flocales%2Fen.json,src%2FApp.vue

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (16) x64 AMD Ryzen 7 5800X3D 8-Core Processor           
    Memory: 2.03 GB / 31.92 GB
  Binaries:
    Node: 22.12.0 - C:\nvm4w\nodejs\node.EXE
    npm: 10.9.0 - C:\nvm4w\nodejs\npm.CMD
    pnpm: 9.8.0 - ~\AppData\Roaming\npm\pnpm.CMD
  Browsers:
    Edge: Chromium (130.0.2849.68)
    Internet Explorer: 11.0.26100.1882
  npmPackages:
    @intlify/unplugin-vue-i18n: 6.0.3 => 6.0.3 
    @vitejs/plugin-vue: 5.2.1 => 5.2.1 
    @vue/eslint-config-typescript: 14.4.0 => 14.4.0 
    vite: 6.1.0 => 6.1.0 
    vite-plugin-checker: 0.8.0 => 0.8.0 
    vite-plugin-vue-devtools: 7.7.2 => 7.7.2 
    vue: 3.5.13 => 3.5.13 
    vue-i18n: 11.1.1 => 11.1.1 
    vue-router: 4.5.0 => 4.5.0 
    vue-tsc: 2.2.0 => 2.2.0

Screenshot

No response

Additional context

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Validations

• Read the Contributing Guidelines
• Read the Documentation
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussions