fix: generate new GUID when renaming imported path to avoid DB conflict

- Imported routes with same Id would overwrite each other in DB
- Now assign route.Id = Guid.NewGuid() on rename, ensuring unique DB entry

src/Commands/ImportPathCommand.cs

@@ -443,6 +443,7 @@ namespace NavisworksTransport.Commands
                                             var originalName = route.Name;
                                             finalRouteName = GenerateUniqueName(originalName, _pathPlanningManager.Routes);
                                             route.Name = finalRouteName;
+                                            route.Id = Guid.NewGuid().ToString();
                                             if (finalRouteName != originalName)
                                             {
                                                 result.RenamedCount++;