Bkg job don't import from temp storage

[PVince81]

The current background job import is using temporary storage when dealing with s3 primary storage or encryption.
This is because the ZipArchive can only open local files, so we need to download the file if it's not directly readable like with Local storage (using $file->getLocalFile().

To solve this, we might need to research using a different library which supports streaming the zip file somewhere for extraction.

@come-nc as discussed, for later