🐛 The builder attribute of FluentApp does not work as expected

[WinXaito]

Describe the bug
The builder attribute of FluentApp does not work as expected

The attribute does not seem to be taken into consideration.

To Reproduce

return FluentApp(
  home: const ExampleWidget(),
  builder: (context, child) {
    return ScaffoldPage(
      content: Column(
        children: [
          Container(height: 40, color: Colors.red),
          Expanded(child: child!),
        ],
      ),
    );
  },
);

Minimal example with MaterialApp: https://gist.github.com/WinXaito/b8977d35245844b1fafd7b89b413b688

Minimal example with FluentApp: https://gist.github.com/WinXaito/7d73f72590ca5b09d2dbb74d1e835473

(See screenshots)

Expected behavior

Work like MaterialApp

Screenshots

With material:

With Fluent: