Fixes webui.sh to exec LAUNCH_SCRIPT

webui.sh

@@ -160,10 +160,10 @@ then
     printf "\n%s\n" "${delimiter}"
     printf "Accelerating launch.py..."
     printf "\n%s\n" "${delimiter}"
-    accelerate launch --num_cpu_threads_per_process=6 "${LAUNCH_SCRIPT}" "$@"
+    exec accelerate launch --num_cpu_threads_per_process=6 "${LAUNCH_SCRIPT}" "$@"
 else
     printf "\n%s\n" "${delimiter}"
     printf "Launching launch.py..."
     printf "\n%s\n" "${delimiter}"
-    "${python_cmd}" "${LAUNCH_SCRIPT}" "$@"
+    exec "${python_cmd}" "${LAUNCH_SCRIPT}" "$@"
 fi