ShaderGraph Graph Inspector "Vector4" W label is always truncated to "..."

Steps to reproduce:

1. Create a new 3D URP project
2. Right-click in Project window > Create > Shader Graph > URP > Lit Shader Graph
3. Open the Shader Graph
4. In the Blackboard (left panel), click + and add a new Vector4 property
5. Select the Vector4 property in the Blackboard
6. Open the Graph Inspector > Node Settings tab
7. Observe the "Default Value" row

Actual results: The four component labels read "X Y Z ..." - the W label is truncated to an ellipsis regardless of how wide the Graph Inspector panel is dragged

Expected results: The W label renders fully, matching the X / Y / Z labels

Reproducible with versions: 6000.0.0b14, 6000.0.0f1, 6000.3.16f1, 6000.4.9f1, 6000.5.0b10, 6000.6.0a5
Not reproducible with versions: 6000.0.0b13

Tested on (OS): Windows 11

Notes:

• Window/panel size has no effect - W remains truncated even at maximum width