External local storage + encryption -- deleted files are left on the server

[thecoffeebin]

Steps to reproduce

1. Enable 'files_external_allow_create_new_local' => 'true', in config/config.php and restart docker
2. Enable Server-side encryption with Default encryption module
3. Create External local storage from the web UI admin settings
4. Upload files into the external local storage
5. Delete some files/folders from the external local storage
6. Browse to /files/files_encryption/keys/files// and notice the deleted files/folders are still present

Expected behaviour

Similar to non-local storage, the encrypted files/folders should be deleted from the server in the case of External local storage

Actual behaviour

The deleted files/folders are still present on the server as described in step (6) above

Server configuration

Operating system: Debian 12 (bookworm)

Web server: Docker-compose

Database: mariadb:10.11

PHP version: PHP 7.4.3

ownCloud version: (see ownCloud admin page) ownCloud 10.15.0 (stable)

Updated from an older ownCloud or fresh install: fresh instal

Where did you install ownCloud from: Official docker

Signing status (ownCloud 9.0 and above):

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