Attachment upload fails permanently when S3 CopyObjectCommand fails cross-bucket (no fallback to download+upload)

(#868) Bug Needs triage media self-hosting

Thread

Comment by Hampus
HampusStaff 1 vote originally by @hampus-fluxer on GitHub
This should be fixed via #3147, pretty much as you suggested. Feel free to retest and close the issue if you can confirm it's fixed!