In other words,
the same as the main app target’s build settings.

7.3

Now open the Build Phases tab. Press the + sign
and select New Run Script Phase.

Drag that new phase to below the Dependencies phase.

Expand the new phase and add this line to the script content:

$FLUTTER_ROOT

/packages/flutter_tools/bin/xcode_backend.sh" build

In other words,
the same as the main app target’s build phases.

This ensures that your Flutter Dart code is compiled
when running the App Clip target.

7.4

Press the + sign and select New Run Script Phase again.
Leave it as the last phase.

This time, add:

$FLUTTER_ROOT