v0.3.2 Fix materials not loading in non-US-English Blender

There was an issue with textures not loading for some users.

@Alli.Gatt0r pointed out in a comment on Youtube that the issue was solved by switching Blender to US English.

Reason: Blender translates node names ('Principled BSDF' → 'Prinzipielles BSDF' etc.) when the UI language is changed. nodes.get() looks up by name, so it returned None in any non-English locale, causing the "material stays minimal" warning and no textures being applied.

Fix: look up nodes by type ('BSDF_PRINCIPLED', 'OUTPUT_MATERIAL') which is always English regardless of UI language.