show character 3d view options for head,shoulder and weapons too

related of https://github.com/azerothcore/Keira3/pull/3498/

Right now the character view is not shown for head, shoulder and weapons because we can show the 3D item as standalone without the character, but would be great to show also that optionally.

<img width="360" height="719" alt="Image" src="https://github.com/user-attachments/assets/d2521e28-b2ea-4f66-8ee0-9e8523e708f3" />
