Normal map looks incorrect when using `standard_surface_to_UsdPreviewSurface`

[msuzuki-nvidia]

When converting a StandardSurface material to a UsdPreviewSurface using the standard_surface_to_UsdPreviewSurface node, normal maps render incorrectly. The translation node passes the normal without adapting formats: StandardSurface expects world-space normals, whereas UsdPreviewSurface expects tangent space normals. This mismatch in normal-space/encoding causes the visual discrepancy.

Example:

Standard Surface	UsdPreviewSurface with translation node