fix(files_versions): only close stream if still open, fixing S3

[susnux]

Summary

streams get closed automatically when dropped, and in some cases the stream seems to be already closed by the S3 library, in which case trying to close it again will raise an error.

• remove explicit fclose from S3->writeStream #26072

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[SystemKeeper]

Can't judge if it's the correct way, but fixes the tests I was having issues with.

[solracsf]

Worth backport it?

[susnux]

Worth backport it?

No only an issue on master. Caused by #52890