Transform.rotation property is as a Vector4 Quaternion instead of a Vector3 field when using InspectorElement.FillDefaultInspector

How to reproduce:
1. Open the attached project "IN-78910.zip"
2. Select the "Main Camera" GameObject in the Hierarchy window
3. Unfold "Local Rotation" of NewElement in the Scene view

Expected results: Transform.rotation property is as a vector3 field
Actual results: Transform.rotation property is a vector4 quaternion instead of a vector3 field

Reproducible with: 2021.3.40f1, 2022.3.35f1, 6000.0.9f1

Reproducible on: Windows 10 22H2
Not reproducible on: No other environment tested