Deprecated UxmlTraits API warning is thrown after adding a Visual Element in UI Builder with Absolute Position Placement enabled

Steps to reproduce:

1. Open the attached project
2. Open the New Scene
3. Open the NewUXMLTemplate.uxml asset in the UI Builder
4. Drag a Label element to the UI Builder's Canvas

Actual results: Deprecated UxmlTraits API warnings are thrown when Visual Elements are added

Expected results: Visual element is added without warnings or errors

Reproducible with versions: 6000.4.0a2, 6000.4.0b1, 6000.5.0a2

Not reproducible with versions: 6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a1

Reproducible on (OS): Ubuntu 24.04, macOS 26.1

Notes:

• Warnings are only thrown when editing a UI Document that is placed inside the Scene