Fedora 44: Nextcloud files cannot be opened, libseccomp BPF export fails

### ⚠️ Before submitting, please verify the following: ⚠️

- [x] This is a **bug**, not a question or a configuration issue.
- [x] This issue is **not** already reported on Github (I have searched for it).
- [x] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions.
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/)

### Bug description

Euro-Office Desktop starts successfully on Fedora 44 and I can connect to my Nextcloud instance.
Authentication succeeds and the complete Nextcloud folder and file structure is visible in Euro-Office Desktop.
However, when I click any file in Nextcloud to open it, the file does not open and the terminal reports:
error: Failed to export bpf: System failure beyond the control of libseccomp

Fedora 44 x86_64
Kernel: 7.2.5-200.fc44.x86_64
libseccomp: 2.6.1-2.fc44.x86_64
glibc: 2.43-8.fc44.x86_64
Qt5: 5.15.18-2.fc44.x86_64
Qt6: 6.11.2-2.fc44.x86_64
Euro-Office DesktopEditors: 9.3.1-dev.0

Additional observations:
- Euro-Office Desktop itself launches successfully.
- The Nextcloud connection succeeds.
- The full file/folder structure is displayed.
- The failure occurs only when opening a remote file.
- Starting Euro-Office with --no-sandbox produces the same error.
- Brave installed via Flatpak works normally on the same Fedora system.

### Steps to reproduce

1. Start Euro-Office Desktop:
euro-office-desktopeditors
2. Connect Euro-Office Desktop to a Nextcloud instance.
3. Browse the Nextcloud folders.
4. Click any document, for example a DOCX or XLSX file.
5. The document does not open.
6. The terminal reports:
error: Failed to export bpf: System failure beyond the control of libseccomp

### Expected behavior

The selected Nextcloud file should open normally in Euro-Office Desktop after the Nextcloud connection has authenticated successfully and the file has been listed in the remote file browser.

### Which files are affected by this bug

Any Office or libreoffice file

### Operating system

Linux

### Which version of the operating system you are running.

Fedora Core 44

### Installation method

Other

### Nextcloud Server version

Nextcloud Hub 26 Spring (34.0.4)

### Nextcloud Desktop Client version

Euro-Office Desktop Editors Community version 9.3.1.dev.0 (x64)

### Did this occur after an update or on a clean installation?

Minor version update (i.e. 33.0.0 → 33.0.1)

### Are you using the Nextcloud Server Encryption module?

Yes

### Are you using an external user-backend?

- [ ] Default internal user-backend
- [ ] LDAP or Active Directory
- [ ] SSO - SAML
- [ ] Other

### Nextcloud Server logs

```shell

```

### Additional info

_No response_

No source files or tests are named. Start by reproducing the failure on Fedora 44 with Euro-Office Desktop, opening a remote DOCX or XLSX file through the Nextcloud browser, and compare the normal and --no-sandbox runs. Done means remote Office files open successfully without the libseccomp BPF export error.

Written by the indexing model from the issue text.