i18n runtimeConfig different domains not working

export default defineNuxtConfig({
  devtools: { enabled: true },
  runtimeConfig: {
    public: {
      apiBase: process.env.NUXT_PUBLIC_API_BASE, // can be overridden by NUXT_PUBLIC_API_BASE environment variable
    },
    i18n: {
      locales: {
        uk: process.env.NUXT_PUBLIC_I18N_LOCALES_UK_DOMAIN,
        fr: process.env.NUXT_PUBLIC_I18N_LOCALES_FR_DOMAIN,
      },
    },
  },
  modules: ["@nuxtjs/i18n"],
  i18n: {
    locales: [
      {
        code: "uk",
        domain: process.env.NUXT_PUBLIC_I18N_LOCALES_UK_DOMAIN,
        file: "en.ts",
      },
      {
        code: "fr",
        domain: process.env.NUXT_PUBLIC_I18N_LOCALES_FR_DOMAIN,
        file: "fr.ts",
      },
    ],
    differentDomains: true,
    langDir: "lang",
  },
});

NUXT_PUBLIC_API_BASE="API prod"
NUXT_PUBLIC_I18N_LOCALES_UK_DOMAIN=http://mydomain.uk
NUXT_PUBLIC_I18N_LOCALES_FR_DOMAIN=http://mydomain.fr