Element Desktop's system tray icon for Manjaro Linux KDE doesn't show correctly

### Description

Sometimes when I boot up my system the Element Desktop's icon in system tray doesn't show up correctly. If I restart the application, the icon is correctly displayed.

**NOTE:** I see there's a similar bug here: https://github.com/vector-im/element-web/issues/16760, but in my situation the icon isn't the correct one, so I don't know if creating a new issue was the most adequate. Feel free to orient me.

### Steps to reproduce

- Boot up the system
- Launch Element Desktop (via Autostart. Command: `/usr/bin/element-desktop %u`)
- Check system tray

I would expect to always see the correct Element Desktop's system tray icon.

Logs being sent: Yes


### Version information

- **Platform**: Desktop

Operating System: Manjaro Linux
KDE Plasma Version: 5.21.3
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2
Kernel Version: 5.4.105-1-MANJARO
OS Type: 64-bit
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5 CPU 650 @ 3.20GHz
Memory: 7.7 GiB of RAM
Graphics Processor: NVA0

For the desktop app:

- **OS**: Manjaro Linux KDE
- **Version**: Element version: 1.7.23, olm version: 3.2.1