fix: use right way to get bundle.optimizeTranslationDirective option

[rx-837]

📚 Description

As know nuxt have two way to pass options for modules.

The first way is dedicated key at the first level of config.

modules: [
  "@nuxtjs/i18n",
],

i18n: {
  // place options here
},

The second way is to pass the options as the second element of the array.

{
  modules: [
    [
      "@nuxtjs/i18n",
      {
        // place options here
      },
    ],
  ],
}

This PR used correct way to get optimizeTranslationDirective option to suppress warning in stdout.

[BobbieGoede]

Thanks!