feat: Refactor review order action bar for improved button layout and async handling in permanent order BLoC

apps/mobile/packages/features/client/orders/create_order/lib/src/presentation/blocs/permanent_order/permanent_order_bloc.dart

@@ -170,10 +170,10 @@ class PermanentOrderBloc extends Bloc<PermanentOrderEvent, PermanentOrderState>
     await _loadRolesForVendor(event.vendor.id, emit);
   }
 
-  void _onHubsLoaded(
+  Future<void> _onHubsLoaded(
     PermanentOrderHubsLoaded event,
     Emitter<PermanentOrderState> emit,
-  ) {
+  ) async {
     final PermanentOrderHubOption? selectedHub = event.hubs.isNotEmpty
         ? event.hubs.first
         : null;
@@ -186,16 +186,16 @@ class PermanentOrderBloc extends Bloc<PermanentOrderEvent, PermanentOrderState>
     );
 
     if (selectedHub != null) {
-      _loadManagersForHub(selectedHub.id, emit);
+      await _loadManagersForHub(selectedHub.id, emit);
     }
   }
 
-  void _onHubChanged(
+  Future<void> _onHubChanged(
     PermanentOrderHubChanged event,
     Emitter<PermanentOrderState> emit,
-  ) {
+  ) async {
     emit(state.copyWith(selectedHub: event.hub, location: event.hub.name));
-    _loadManagersForHub(event.hub.id, emit);
+    await _loadManagersForHub(event.hub.id, emit);
   }
 
   void _onHubManagerChanged(

apps/mobile/packages/features/client/orders/create_order/lib/src/presentation/widgets/review_order/review_order_action_bar.dart

@@ -37,14 +37,17 @@ class ReviewOrderActionBar extends StatelessWidget {
               leadingIcon: UiIcons.chevronLeft,
               onPressed: onBack,
               size: UiButtonSize.large,
+              text: '',
             ),
             const SizedBox(width: UiConstants.space3),
-            UiButton.primary(
+            Expanded(
+              child: UiButton.primary(
                 text: submitLabel ?? t.client_create_order.review.post_order,
                 onPressed: onSubmit,
                 isLoading: isLoading,
                 size: UiButtonSize.large,
               ),
+            ),
           ],
         ),
       ),