K8200 Vibration Endstop Trigger Fix

The endstop switches used in the K8200 are sometimes triggered during a print when the frame is vibrating too much.
This happens mostly during zig-zag-filling of small perimeters and when using hexagonal infill with higher speeds.
It has the nasty side effect of misaligning all layers printed after the endstop is triggered, often ruining the print.

Basically, the X- and Y-motors are executing a movement command and are interrupted by the endstop triggering, cutting off the power supply to