Flathub release .desktop file icons

[Damglador]

Steps to Reproduce

Steps to reproduce the behavior:

1. Install Discover Overlay from Flathub as a user
2. Open app launcher and find Discover Overlay Configure
3. See error

Expected behavior

A clear and concise description of what you expected to happen.

Problematic behavior

Discover Overlay Configure is missing icon

Desktop (please complete the following information):

• Operating System / Distrobution: Arch Linux
• Desktop Environment: KDE Plasma 6.2.5

Installation Method

• flatpak

Discord client information

• Install method: Arch repos
• Version: stable 357831

Additional context

Packaged icon is io.github.trigg.discover_overlay, but in io.github.trigg.discover_overlay.configure.desktop Icon is set to discover-overlay. In io.github.trigg.discover_overlay.desktop everything as it should be.