Can't map fields inside preexistent field groups

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.2 CE GA3, 7.4.13 DXP GA1, 7.4.3.4 CE GA4, Master
• Component/s: Objects
• Labels:
  • qa_test_not_needed
• Fix Priority: 4
• Git Pull Request: https://github.com/liferay-objects/liferay-portal/pull/9

 Description
When a user creates a Field Group on a Form and saves it, the fields inside the Field Group can't be mapped to an object entry when edited by creating a field group inside the field group created before.

 Steps to Reproduce

1. Go to Content & Data > Forms;
2. Create a New Form;
3. Add any field (e.g.: Text Field);
4. Add any field inside the field added above(e.g.: Text Field);
5. A field group will appear;
6. On the sidebar, select the Advanced tab;
7. Map each field to an object field;
8. Publish the form;
9. Go to Content & Data > Forms;
10. Edit the form created obove;
11. Add a field inside the preexistent field group;
12. On the sidebar, select the Advanced tab;
13. Notice the error on the Entry select field, related to the object;

 Expected Result
The options must be able to be chosen.

 Actual Result
Could not choose an option o map the field.

 Reproduced In
master: 1f38c8e7050863bf094b2f59ab1f87db1ab66ab9