fix: prevent duplicate database save during XML import deserialization

- ParseRouteElement used route.AddPoint() which called RecalculateAndSaveRoute
- This saved the path to DB with original name before ImportPathCommand could rename it
- Changed to route.Points.Add() + route.RecalculateRoute() to skip DB save
- Only ImportPathCommand → AddRoute → SavePathToDatabase now persists renamed path

src/Core/PathDataManager.cs

@@ -1594,10 +1594,12 @@ namespace NavisworksTransport
                             var point = ParsePointElement(pointNode);
                             if (point != null)
                             {
-                                route.AddPoint(point);
+                                route.Points.Add(point);
                             }
                         }
                     }
+                    // 仅在内存中重建几何/索引，不触发数据库保存
+                    route.RecalculateRoute("XML导入");
                 }
 
                 return route;