Importing files with explicit normals (in this case from CAD data) discards (or recomputes) normals

**Describe the bug**
When importing geometry originating from CAD the included normals seem to be discarded and that creates very visual shading artifacts. If i import or load the same file in other DCCs this does not happen. It also does not happen when loading the file as a stage. But even if i duplicate the correct stage prim to a maya node the normals are discarded.

**Expected behavior**
Import normals properly, just like loading as a stage or other applications do.

**Attachments**
Find attached a comparison. The right side shows the exact same file loaded via the USD Layer editor as a stage. The left side shows the file imported via USD Import

**Specs (if applicable):**

- Windows
- Maya version 2023.3
- tested with Maya USD 0.26.0/0.27.0