Language not passed when using hierarchical formatter

Problem/Motivation

When the hierarchical formatter is used (for taxonomy term), the language is not passed so the terms are always displayed in their original language.

Steps to reproduce

Multilinguage site.
Create a taxonomy term in a vocabulary.
Create a custom field with a subfield that is an entity reference to that vocabulary.
Display the term using the formatter display of custom field in non default language: the taxonomy term is shown with default language.

Proposed resolution

Pass the language internally

Remaining tasks

User interface changes

API changes

Data model changes