Window Icons do not work on wayland

[deltragon]

Describe the bug
On wayland, windows do not use the SafeEyes logo as icons - instead, they show the generic wayland logos. This applies both to window decorations as well as to the task manager.
(The system tray is not affected and shows the correct icon.)

To Reproduce
Steps to reproduce the behavior:

1. Open the about screen, or any other window in SafeEyes (eg. settings).

Expected behavior
All windows use the SafeEyes logo as icons, both in the window decorations as well as the task manager.
The generic wayland logo is never used.

Desktop (please complete the following information):

• OS: Fedora 40
• Desktop Env: KDE Plasma Wayland
• Version: 6.1

Screenshots

[deltragon]

I have a fix for this based on #561. Will submit it once it is merged.