Fix Service Removal and Combo Package Management Issues

- Added ComboPackage dependency check in removeService; deactivates related packages when a service is removed.
- Added filterActiveServices helper to list only active services.
- Updated removeService and removeComboPackage with headings, empty-state checks, and consistent success/error messages.
- Enhanced createComboPackages:
  - Uses active services only.
  - Added cancel option and confirmation after first selection.
  - Prevented duplicate selection and infinite loop when limited services exist.
  - Improved feedback when all available services are selected.
- Updated selectServicesToRemove and selectComboPackage to handle empty states gracefully without exceptions.

Fixes #1749

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/ServiceManagementService.cpp

@@ -26,6 +26,7 @@ Date:19-May-2026
 #include "User.h"
 #include "UserManagementService.h"
 #include "Utility.h"
+#include "ComboPackage.h"
 
 /*
 Function: purchaseService
@@ -909,9 +910,27 @@ Throws:
 void ServiceManagementService::removeService(const std::string& serviceID)
 {
 	util::Map<std::string, Service*>& currentServices = m_dataStore.getServices();
+    util::Map<std::string, ComboPackage*>& currentComboPackages =  m_dataStore.getComboPackages();
 	if (currentServices.find(serviceID) != -1)
 	{
 		currentServices.getValueAt(currentServices.find(serviceID))->setState(util::State::INACTIVE);
+        for (int iterator = 0; iterator < currentComboPackages.getSize(); iterator++)
+        {
+            ComboPackage* currentComboPackage = currentComboPackages.getValueAt(iterator);
+            if (currentComboPackage && currentComboPackage->getState() == util::State::ACTIVE)
+            {
+                util::Map<std::string, Service*> currentServices = currentComboPackage->getServices();
+                for (int iterator = 0; iterator < currentServices.getSize(); iterator++)
+                {
+                    auto currentService = currentServices.getValueAt(iterator);
+                    if (currentService->getId() == serviceID)
+                    {
+                        currentComboPackage->setState(util::State::INACTIVE);
+                        break;
+                    }
+                }
+            }
+        }
 	}
 	else
 	{