The nettie hack is used in DRC but we also need to use it in zone filler
to allow zones to be used with netties. We limit this to the
appropriate nets in the nettie
Fixes https://gitlab.com/kicad/code/kicad/issues/7351
This behavior provided shorter net names, but was confusing if
the user gives an explicit strong driver in the subsheet but not
one in the parent sheet.
Testcases updated for net name changes; connectivity is the same
Fixes https://gitlab.com/kicad/code/kicad/-/issues/4201
Seth Hillbrand
Jeff Young
Sylwester Kocjan
Marek Roszko
Ola Rinta-Koski
Jon Evans
Wayne Stambaugh