[ci] The formatter is opting into the Dart 3.7 formatting style

[navaronbracke]

Du to a change in the Dart formatter for Dart 3.7, the Dart code is now formatted using the new tall-style.

We should opt-out momentarily and stick to Flutter 3.27 for formatting.
Once we start supporting Dart 3.7, we should turn this back on.

[juliansteenbakker]

As long as the minimum sdk constraint is below dart 3.7, it will use the old style. Source: https://pub.dev/packages/dart_style/changelog

[navaronbracke]

Yes, I know, this is just a tracking issue for when we update the minimum version and we get formatting diffs :)