The previous commit merged pads with copper areas. This was appealing
but broke when the pad and the area were meant to have different
size/shape technical layers. Small pads = Small paste. Instead, we do
not merge the pads but we assign them to have the appropriate nets in
KiCad, allowing the same effective result but keeping the technical
layers correct
(cherry picked from commit 51eb7aa5b5)
8832b22952