fix(navigation): ensure default route loads content

- Updated AuthNavigator to push /worker-main/home/ explicitly
- Updated StaffMainNavigator to navigate to home by default
- Fixes blank screen issue by ensuring RouterOutlet has a child route

apps/mobile/packages/features/staff/authentication/lib/src/presentation/navigation/auth_navigator.dart

@@ -16,6 +16,6 @@ extension AuthNavigator on IModularNavigator {
 
   /// Navigates to the worker home (external to this module).
   void pushWorkerHome() {
-    pushNamed('/worker-home');
+    pushNamed('/worker-main/home/');
   }
 }