VRP with breaks minor bug?

**What version of OR-Tools and what language are you using?**
Version: stable branch
Language: C++

**Which solver are you using (e.g. CP-SAT, Routing Solver, GLOP, BOP, Gurobi)**
Routing Library

**What operating system (Linux, Windows, ...) and version?**
Linux Mint 21.3

**What did you do?**
Using VRP with breaks. `GlobalVehicleBreaksConstraint` will be added to the Solver.

**What did you expect to see**
I believe here we're updating `StartMin` value of the arc `path_[pos] -> path_[pos + 1]` to `EndMin` value of the break interval. This arc `StartMin` is `CumulVar(path_[pos])->Min() - arc_start_offset`. So instead of `SetMin(CapSub(interval_end_min, arc_start_offset))` it should be `SetMin(CapAdd(interval_end_min, arc_start_offset))`.

https://github.com/google/or-tools/blob/5124f4975bd6ab5a863ea55657833ab640730429/ortools/constraint_solver/routing_breaks.cc#L943-L951