Mattermost window no longer open from tray icon on Fedora 43

```console
$ flatpak run com.mattermost.Desktop
[2:1117/122423.084294:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
12:24:23.236 › Logger Log level set to: { level: 'info' }
[2:1117/122423.260776:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[2:1117/122423.260808:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[2:1117/122423.260823:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[2:1117/122423.260836:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[2:1117/122423.260849:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[macos-notification-state] failed to load 'notificationstate' addon Error: Module did not self-register: '/run/user/1000/app/com.mattermost.Desktop/.org.chromium.Chromium.ue4oGz'.
at process.func [as dlopen] (node:electron/js2c/node_init:2:2617)
at Module._extensions..node (node:internal/modules/cjs/loader:1874:18)
at Object.func [as .node] (node:electron/js2c/node_init:2:2844)
at Module.load (node:internal/modules/cjs/loader:1448:32)
at Module._load (node:internal/modules/cjs/loader:1270:12)
at c._load (node:electron/js2c/node_init:2:17993)
at TracingChannel.traceSync (node:diagnostics_channel:322:14)
at wrapModuleLoad (node:internal/modules/cjs/loader:244:24)
at Module.require (node:internal/modules/cjs/loader:1470:12)
at require (node:internal/modules/helpers:147:16) {
code: 'ERR_DLOPEN_FAILED'
}
```

May be related to #195

Cannot downgrade either, I get the following error:

```
flatpak[86308]: libostree HTTP error from remote flathub for : Timeout was reached
```

Reproduce the tray-icon behavior on Fedora 43 with `flatpak run com.mattermost.Desktop`, and compare the symptoms with issue #195. Trace the desktop application's tray and window-opening behavior using the available runtime logs; done means selecting the tray icon reliably opens the Mattermost window without the reported errors.

Written by the indexing model from the issue text.