[Bug]: Trac icon menus option 'Open Nextcloud Desktop' does not do anything.

### ⚠️ 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've searched 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

I'm using the NextCloud Desktop App for Linux on a current Bluefin GNOME Desktop. I have two instances connected (I'd like to connect another one but it seems there is no button and no hint on any limit). Clicking the Trac Icon reveals a menu with the first option being 'Open Nextcoloud Desktop'. Clicking it does nothing. I assume it would not lead to anything other then what the option settings shows but I dont know. It is the latest flathub version. The help page linked from that app does not say anything on this app.

### Steps to reproduce

1. Click on Tray Icon
2. Select "Open Nextcloud Desktop"
3. nothing happens
...

### Expected behavior

Not sure what is supposed to happen. It very much looks like it should lead to something.

### Which files are affected by this bug

none

### Operating system

Linux

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

Bluefin (Version: gts-42.20251119)

### Package

[Flatpack](https://flathub.org/de/apps/com.nextcloud.desktopclient.nextcloud)

### Nextcloud Server version

First is [Nextcloud Hub 10](https://nextcloud.com/) (31.0.8)
Second I don't know. Neither the Desktop App nor the Webapp shows the version anywhere I can find.

### Nextcloud Desktop Client version

Nextcloud Desktop Client Version 4.0.1daily (KDE)

### Is this bug present after an update or on a fresh install?

Reinstall does not change anything.

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

Encryption is Enabled

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

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

### Nextcloud Server logs

not available. Just a user.

### Additional info

_No response_