ArnoldUsd not generated when kick doesn't have a procedural (test_1588 failing)

[cpichard]

Describe the bug When building the schemas, our code will use kick's configuration to know about the arnold nodes. If kick usd procedural has been deleted or removed, the schemas won't have the ArnoldUsd prim definition and the test 1588 will fail. arnold-usd should directly provide its ArnoldUsd definition and not rely on a previously made one, as it can be outdated.

[autodesk-oss-arnold-bot[bot]]

Issue synced internally to ARNOLD-14457