refactor: dont try to stop a server that is already stopped

lgsm/modules/command_stop.sh

@@ -260,12 +260,12 @@ fn_stop_pre_check() {
 	else
 		# Select graceful shutdown.
 		fn_stop_graceful_select
-	fi
 		# Check status again, a kill tmux session if graceful shutdown failed.
 		check_status.sh
 		if [ "${status}" != "0" ]; then
 			fn_stop_tmux
 		fi
+	fi
 }
 
 check.sh