fix(web-ui): don't open ui automatically on app start (#5329)

packaging/linux/flatpak/scripts/sunshine.sh

@@ -1,11 +1,2 @@
 #!/bin/sh
-
-PORT=47990
-
-if ! curl -k https://localhost:$PORT > /dev/null 2>&1; then
-  (sleep 3 && xdg-open https://localhost:$PORT) &
-  exec sunshine "$@"
-else
-  echo "Sunshine is already running, opening the web interface..."
-  xdg-open https://localhost:$PORT
-fi
+exec sunshine "$@"

src/config.cpp

@@ -1545,9 +1545,6 @@ namespace config {
         service_ctrl::wait_for_ui_ready();
       }
 
-      // Launch the web UI
-      launch_ui();
-
       // Always return 1 to ensure Sunshine doesn't start normally
       return 1;
     }