solaris: fix light type mapping translation

[aoblet]

Title

Fix moonray:class defaulting to the literal string "None" for:

• DomeLight
• DomeLight_1
• DistantLight

Summary

The hidden class parameter on Moonray light nodes (which drives themoonray:class USD attribute) computes its default value via an embedded Python expression in moonray_Light.ds and its duplicate,HdMoonrayRendererPlugin_Light.ds.

When a light node has no lighttype spare parameter, which is the case for native single-purpose light LOPs such as Distant Light, Dome Light, the expression falls back to reading hou.parm("primtype"), but only had an explicit branch for UsdLuxDomeLight -> "EnvLight":

else:
    parm = hou.parm("primtype")
    value = parm.eval()
    if value == "UsdLuxDomeLight":
        return "EnvLight"
    # falls through here for every other primtype

Fix

Replace the single if/else with an explicit primtype -> class map covering all supported UsdLux types, Including both UsdLuxDomeLight and UsdLuxDomeLight_1:

• DistantLight
• RectLight
• SphereLight
• DiskLight
• CylinderLight
• PortalLight
• MeshLight
• EnvLight

[linux-foundation-easycla]

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• ✅ login: aoblet / name: Alexis Oblet (e6af662)