After changing the instance default language to another locale, the Structure fieldset name is not propagated by the instance default language

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.2 CE GA3, 7.4.13 DXP GA1, Master
• Component/s: Data Engine
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-data-engine/liferay-portal/pull/565

Description
After changing the instance default language to another locale, the Structure fieldset name is  propagated by the user default language (English) and not propagated by the instance default language. 

Steps to Reproduce

1. Go to Control Panel > Instance Settings > Localization;
2. Change default language to another locale and save;
3. Go to Content & Data > Web Content > Structures tab;
4. Add a new Structure;
5. Go to create a new fieldset;
6. Create a fieldset with the instance language locale you had chosen;
7. Save it and put it on builder;
8. Go to the fieldset sidebar;
9. Edit the fieldset by adding an English translation;
10. Save the structure;
11. Go back to the structure and see the fiel on fieldset label;

Expected Result
The field on fieldset label should be the instance default locale is.

Actual Result
The field on fieldset English translation persists.
Reproduced In
master: 3a8ab55f0466afd7405223636a5cef15307a31dd