fix: flatpak steam launch

dzgui.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 set -o pipefail
-version=3.2.0-rc.3
+version=3.2.0-rc.4
 
 aid=221100
 game="dayz"
@@ -830,7 +830,7 @@ concat_mods(){
 launch(){
 	mods=$(concat_mods)
 	if [[ $debug -eq 1 ]]; then
-		launch_options="steam -applaunch $aid -connect=$ip -nolauncher -nosplash -name=$name -skipintro \"-mod=$mods\""
+		launch_options="$steam_cmd -applaunch $aid -connect=$ip -nolauncher -nosplash -name=$name -skipintro \"-mod=$mods\""
 		print_launch_options="$(printf "This is a dry run.\nThese options would have been used to launch the game:\n\n$launch_options\n" | fold -w 60)"
 		$steamsafe_zenity --question --title="DZGUI" --ok-label="Write to file" --cancel-label="Back"\
 			--text="$print_launch_options" 2>/dev/null
@@ -845,7 +845,7 @@ launch(){
 	else
 		echo "[DZGUI] All OK. Launching DayZ"
 		$steamsafe_zenity --width 500 --title="DZGUI" --info --text="Launch conditions satisfied.\nDayZ will now launch after clicking [OK]." 2>/dev/null
-		steam -applaunch $aid -connect=$ip -nolauncher -nosplash -skipintro -name=$name \"-mod=$mods\"
+		$steam_cmd -applaunch $aid -connect=$ip -nolauncher -nosplash -skipintro -name=$name \"-mod=$mods\"
 		exit
 	fi
 		one_shot_launch=0