fix(route_handler): exception in route_handler caused by int overflow (#6755)

Remove cast to int which might cause overflow

Signed-off-by: Sebastian Zęderowski <szederowski@autonomous-systems.pl>
Co-authored-by: Sebastian Zęderowski <szederowski@autonomous-systems.pl>

Author: sebekx

planning/route_handler/src/route_handler.cpp

@@ -1708,7 +1708,7 @@ PathWithLaneId RouteHandler::getCenterLinePath(
 
   // append a point only when having one point so that yaw calculation would work
   if (reference_path.points.size() == 1) {
-    const lanelet::Id lane_id = static_cast<int>(reference_path.points.front().lane_ids.front());
+    const lanelet::Id lane_id = reference_path.points.front().lane_ids.front();
     const auto lanelet = lanelet_map_ptr_->laneletLayer.get(lane_id);
     const auto point = reference_path.points.front().point.pose.position;
     const auto lane_yaw = lanelet::utils::getLaneletAngle(lanelet, point);