Update possibly translated field group labels

Problem/Motivation

Incorrect translation for form labels when swich languages. It happens because some of hook_entity_form_display_alter have save process for form displays and it saves translated string to the default configuration.

Steps to reproduce

- Enable social_tagging module
- Enable social_content_translation module
- Add additional language
- Add translation for any field group label
- Go to any add/edit content form where used translated field group label
- Switch to add language
- Switch back to the default language

Proposed resolution

Override language for configurations before saving.