Field group labels translation issues

Problem/Motivation

Field groups are present at many forms in open social. Especially on groups and group content. But there are critical issues when you want to translate them.

As field groups are config, It is clear to translate them trough the config ui rather the interface translation. But we have found several places where social translate field groups with the t() function which is wrong.

The issue was also hard to track, because "Social" manipulates the field groups via code.

Example form the social_group.module

      $change_fieldgroup_titles = [
        'group_topic_visibility',
        'group_event_visibility',
      ];
      foreach ($change_fieldgroup_titles as $fieldgroup_title) {
        if (isset($form['#fieldgroups'][$fieldgroup_title])) {
          $form['#fieldgroups'][$fieldgroup_title]->label = t('Access permissions')->render();
        }
      }

As you can see, the field group label will be changed with t(), which is wrong. There are several other places where this seems to happen.

Steps to reproduce

Visit an entity form display for a group or group content. Try to translate the field group label. You will recognize that no matter what you do, the field group labels will be always switch back to the strings transalted via interface translation.

Proposed resolution

Please avoid translating config with interface translation.