Fix Flutter code quality issues

moneymgr_mobile/lib/services/router/router.dart

@@ -75,20 +75,20 @@ GoRouter router(Ref ref) {
     debugLogDiagnostics: true,
     initialLocation: prefs.startOnScansListScreen() ? scansPage : capturePage,
     routes: [
-      GoRoute(path: homePage, builder: (_, __) => const Scaffold()),
-      GoRoute(path: authPage, builder: (_, __) => const LoginScreen()),
-      GoRoute(path: qrAuthPath, builder: (_, __) => const QrAuthScreen()),
+      GoRoute(path: homePage, builder: (_, _) => const Scaffold()),
+      GoRoute(path: authPage, builder: (_, _) => const LoginScreen()),
+      GoRoute(path: qrAuthPath, builder: (_, _) => const QrAuthScreen()),
       GoRoute(
         path: manualAuthPage,
-        builder: (_, __) => const ManualAuthScreen(),
+        builder: (_, _) => const ManualAuthScreen(),
       ),
-      GoRoute(path: settingsPage, builder: (_, __) => const SettingsScreen()),
+      GoRoute(path: settingsPage, builder: (_, _) => const SettingsScreen()),
 
       // Configuration for the bottom navigation bar routes. The routes themselves
       // should be defined in [navigationItems]. Modification to this [ShellRoute]
       // config is rarely needed.
       ShellRoute(
-        builder: (_, __, child) => child,
+        builder: (_, _, child) => child,
         routes: [
           for (final (index, item) in navigationItems.indexed)
             GoRoute(