fix(nav): supprimer onNavigate de DashboardDrawer et tous ses appelants

lib/features/dashboard/presentation/pages/role_dashboards/consultant_dashboard.dart

@@ -20,7 +20,6 @@ class ConsultantDashboard extends StatelessWidget {
       backgroundColor: UnionFlowColors.background,
       appBar: _buildAppBar(context),
       drawer: DashboardDrawer(
-        onNavigate: (route) => Navigator.of(context).pushNamed(route),
         onLogout: () => context.read<AuthBloc>().add(const AuthLogoutRequested()),
       ),
       body: AfricanPatternBackground(