Allow one to set a custom progress callback (#2609)

ming030890

2025-08-05 b3fb4c0acd5f52a313f024b6f69b8f025c6eddfe

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<?xml version="1.0" encoding="UTF-8"?>
<Bucket
   uuid = "A434E096-73C6-4C03-86F5-FAA8A72D79B0"
   type = "1"
   version = "2.0">
</Bucket>