[Seven Slots] - Language selector

[sneridagh]

Important

If you are not a member of the Volto Team or Developers Team in the Plone GitHub organization, then do not work on or comment on this issue.

The header language selector.

https://github.com/plone/volto/blob/main/packages/volto/src/components/theme/LanguageSelector/LanguageSelector.jsx

Link to the parent PLIP

#6672