feat(vue-demo-store): @nuxtjs i18n upgrade

[mkucmus]

Description

bumps version to 8.0.0-rc.4

see the diff between beta-10 and rc-4 on the module's repo.

Known issues to solve

• reading t function in SSR in production build - works with disabled jit compilation - check if just in time compilation is really needed - documentation
  says that jit is needed when we use external translation fetched via URL - async. HMR still works as expected when the translation is being changed in a dev mode 👍🏼

• missing product options labels
  

• wrong redirect to pl-PL lang - that was detectBrowserLanguage setting, enabled by default

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Screenshots (if applicable)

Additional context

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
frontends-demo	✅ Ready (Inspect)	Visit Preview	Oct 2, 2023 7:39am
shopware-frontends-docs	✅ Ready (Inspect)	Visit Preview	Oct 2, 2023 7:39am