Predefined values do not work for nested web content structure elements

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP94, 7.0.10.15 DXP SP15, 7.0.X, 7.1.10 DXP FP19, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP7, 7.2.X, 7.3.3 CE GA4, 7.3.4 CE GA5, 7.3.10 DXP GA1, Master
• Component/s: Dynamic Data Mapping
• Labels:
  • ee-ts
  • liferay-dxp-70-sp15
  • liferay-dxp-71-sp5
  • liferay-fixpack-de-94-7010
  • liferay-fixpack-dxp-19-7110
  • liferay-fixpack-dxp-7-7210
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3

Steps to reproduce:

1. Log in as Admin
2. Go to Content > Web Content > Structures
3. Add a Structure, use the attached Structure.json (no need to add Template)
4. Go back to Content > Web Content
5. Click "+" to add a new Web Content, select the new structure
6. Observe that both fields have predefined values in EN, DE and FR languages

Actual behavior: The predefined text for not nested field (CTA button) changes according to the language. The text for nested field (Button), always shows the default language value.
Expected behavior: The predefined text for the nested field (Button) should change according to the language.

Also tested on:
7.0.x @2c936d4d4ffd2b49146b902966c76bd410481a42 ->Same issue
Master @9b16898f5c46d1e57b05a17ea68f5d1e6233ba45 -> The nested field remains empty and does not show any of the predefined values.