The app does not start on Wayland

[xplosionmind]

Maybe related to #292.

Log:

$ flatpak run org.signal.Signal 
Debug: Will run signal with the following arguments: 
Debug: Additionally, user gave: 
Set Windows Application User Model ID (AUMID) { AUMID: 'org.whispersystems.signal-desktop' }
NODE_ENV production
NODE_CONFIG_DIR /app/Signal/resources/app.asar/config
NODE_CONFIG {}
ALLOW_CONFIG_MUTATIONS undefined
HOSTNAME undefined
NODE_APP_INSTANCE undefined
SUPPRESS_NO_CONFIG_WARNING undefined
SIGNAL_ENABLE_HTTP undefined
userData: /home/tommi/.var/app/org.signal.Signal/config/Signal
config/get: Successfully read user config file
config/get: Successfully read ephemeral config file
LaunchProcess: failed to execvp:
xdg-settings
LaunchProcess: failed to execvp:
xdg-settings
[2:1125/185914.031180:ERROR:ozone_platform_x11.cc(240)] Missing X server or $DISPLAY
[2:1125/185914.031218:ERROR:env.cc(255)] The platform failed to initialize.  Exiting.
The futex facility returned an unexpected error code.

system information:

             .',;::::;,'.                tommi@tfw 
         .';:cccccccccccc:;,.            --------- 
      .;cccccccccccccccccccccc;.         OS: Fedora Linux 39 (Workstation Edition) x86_64 
    .:cccccccccccccccccccccccccc:.       Host: Laptop 13 (AMD Ryzen 7040Series) A7 
  .;ccccccccccccc;.:dddl:.;ccccccc;.     Kernel: 6.5.12-300.fc39.x86_64 
 .:ccccccccccccc;OWMKOOXMWd;ccccccc:.    Uptime: 2 hours, 19 mins 
.:ccccccccccccc;KMMc;cc;xMMc:ccccccc:.   Packages: 1925 (rpm), 64 (flatpak) 
,cccccccccccccc;MMM.;cc;;WW::cccccccc,   Shell: zsh 5.9 
:cccccccccccccc;MMM.;cccccccccccccccc:   Resolution: 2256x1504 
:ccccccc;oxOOOo;MMM0OOk.;cccccccccccc:   DE: GNOME 45.1 
cccccc:0MMKxdd:;MMMkddc.;cccccccccccc;   WM: Mutter 
ccccc:XM0';cccc;MMM.;cccccccccccccccc'   WM Theme: Adwaita 
ccccc;MMo;ccccc;MMW.;ccccccccccccccc;    Theme: Adwaita [GTK2/3] 
ccccc;0MNc.ccc.xMMd:ccccccccccccccc;     Icons: Adwaita [GTK2/3] 
cccccc;dNMWXXXWM0::cccccccccccccc:,      Terminal: kgx 
cccccccc;.:odl:.;cccccccccccccc:,.       CPU: AMD Ryzen 7 7840U w/ Radeon 780M Graphics (16) @ 5.132G 
:cccccccccccccccccccccccccccc:'.         GPU: AMD ATI c1:00.0 Phoenix1 
.:cccccccccccccccccccccc:;,..            Memory: 9679MiB / 31261MiB 
  '::cccccccccccccc::;,.