onProgress event should send the name parameter

The `onProgress` event sends the `name` parameter as an empty string. I've tested this on 5.0.3 using the s3 client, but I expect this is broken for all clients.

This appears have broken in 74f3ca78b2ee65e7d344acabb4805fb120ebfd84.

I was unable to find a test that executed the function in question.