[Bug]: Fallback Language for inherited localized fields not working. #18846
Description
Pimcore version
v2025.3 & older
Steps to reproduce
Create Dataclass with localized field containing wysiwyg field, inheritance enabled.
Configure Fallback languages, e.g. DE fallsback to EN:
Create a folder and create nested dataobject instances inside. Set localized wysiwyg field on parent:
Open Datagrid view on parent folder level, add localized wysiwyg field to grid view options and switch to locale DE:
Actual Behavior
Column localized.wysiwyg DE does not inherit localized.wysiwyg EN fallbackLanguage values correctly. Interesting is that in Grid view the lowest nested object seems to have it, but the parent doesnt, see screenshots in how to reproduce` section. Also currently configured on demo.pimcore.com/admin
When exporting CSV no columns inherit the fallbacklanguage values. Also interesting, for localeFR no fallback language has been configured via system settings, but it behaves exactly like DE which has EN set as fallback.
Expected Behavior
localized inherited fields receive correct fallback language values if available.