🐛 Bug Report

Sidebar is properly translated through i18n folder json files. But a versioned sidebar does not show its existing translations, despites version ids are added to both json files and versioned markdown files.

Have you read the Contributing Guidelines on issues?

yes

To Reproduce

1. Translate your sidebar using the appropriate i18n folder json files
2. Create a version using yarn run version
3. Make sure versioned pages are translated, launch docusaurus and open a versioned translated page

Expected behavior

Sidebar labels and page title are translated

Actual Behavior

Sidebar labels and page title are not translated

Reproducible Demo

You can see the issue on docusaurus website :

• translated non-versioned page (next) in FR, sidebar labels and title are translated:
  https://docusaurus.io/docs/fr/next/custom-pages

• translated versioned page (1.1.4) in FR, sidebar labels and title are NOT translated:
  https://docusaurus.io/docs/fr/custom-pages