3D asset importer sometimes gets stuck

When importing simultaneously the attached test assets, importer gets stuck. Importer log shows "generating icons" or "importing 3D asset" in the point where it jams.

On Windows, Linux and macOS

Steps:

• Launch DS
• Create general empty project, qt6.3 targeted
• Import the attached 3D assets simultaneously
• Importer gets stuck, need to eventually cancel the import
• If I import assets in smaller groups or one by one, imports seems to succeed.