UINAME in nodedefs does not work when namespace is used

[zicher3d]

Tried in MaterialX 1.38.8.

Steps to reproduce:
1 - Unzip and put the attached nodedefs file in your libraries.
2 - Start materiaX Graph Editor
3 - Press Tab to bring up list of nodes
4 - Select the "namespace_debug" group
5 - The node "nodedef_without_namespace" correctly uses the uiname string
6 - The node "test:ND_nodedef_with_namespace" does NOT use the uiname string.

The documentation for uiname in nodedefs specifically says:
"This is most useful when the defines a namespace, so the user doesn't need to see a full namespaced path for the node."
Which is the exact case it fails in this test.

namespace_debug.zip

Please check also the video below. The video highlights 2 issues. This ticket is about the first part of the video.

MaterialXGraphEditor_namespace_debug-1.mp4