At least you found a rear locker reference. It would be useless without a center locker, so that’s good news.On the US website it says "Electronic Active Differential with Torque Vectoring by Breaking" with the offroad package, the picture for the package has little arrows next to the rear wheels so I guess that means rear? An yes I can't find anywhere on the US website that says it comes with center diff lock. Found this "ACTIVE REAR LOCKING DIFFERENTIAL This system offers the additional benefit of more traction on corners and more grip off-road. It does so by controlling the slip between the left and right wheels on the rear axle.1
If the center were open, 100% of the power could go to the low traction front wheels if your locked rear had good traction but any wheel in front did not.
Center and rear lockers means guaranteed 3 wheel drive