3MFLoader: Fix parsing of assets with sub models. #30491
Merged
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Related issue: #30174
Description
Some 3MF files with with production extension would not load as the root model can contain a path key used to reference a models outside the current file (still in the 3MF archive)
Only the root model can contain these references so reversing the build order is a simple fix for this.
Ref (Chapter 2):
Further, only a component element in the root model file MAY contain a path attribute. Non-root model file components MUST only reference objects in the same model file.
There are models with the extension to test in the related issue, I also tested models without and they were unaffected.