Learned something new today....But many cars have curved covers on the headlights. Many have projector type lenses. Seems like that is an outdated fix. Tiguans have bifferent lights just on model alone. Mine has Bi-Xenon, so one lense for both low and high beam. Low beam is actually the same lighting element with an internal shield, so any external adaption for the low beam would also affect the high beam. Also, my headlights have the AFS system, so they move their aim up and down and left and right....A fixed patch would also be a problem.
Maybe the lights could just be re-aimed for right hand driving (The correct side - LOL) for your trip? Not sure VW makes entirely different light assemblies for UK/Au versus the rest of the world.
However, I don;t really have that much info on the ROW cars, only US cars, so maybe someone else can chime in...