What can happen with the PCB foil while SMD resistor destructive overheat?
It is likely that R19 will fail open circuit. It is rare but not impossible for a film resistor failure to result in a short. I've never seen it happen.

Consider using an appropriately rated resettable fuse in place of R19.

Predicting the damage to the PCB foil is hard to do. I've seen 35um (1oz) foil pads apparently survive thermal destruction of a resistor, but then fall apart during (very careful) rework.