Make Imaginary work with server-side encryption

⚠️ This issue respects the following points: ⚠️ • This is a bug, not a question or a configuration/webserver/proxy issue. • This issue is not already reported on Github _(I've searched it)_. • Nextcloud Server is up to date. See [Maintenance and Release Schedule]( for supported versions. • Nextcloud Server is running on 64bit capable CPU, PHP and OS. • I agree to follow Nextcloud's [Code of Conduct]( Bug description When using server-side encryption, if you enable the usage of Imaginary micro service, all picture are sent encrypted to imaginary, making the micro service totally useless ( and silently, you can only check that by seeing errors 400 in imaginary log, instead of normal 200 answers) Steps to reproduce 1. Setup nextcloud with server side encryption 2. Enable Imaginary micro service 3. See that imaginary cannot generate preview Expected behavior Previews are correctly generated ( by not using Imaginary with …