Fixed placement render for wires and cobweb

Would render their nodes with the sprite function, which shouldn't happen

src/entities/cobweb.lua

@@ -7,6 +7,7 @@ local cobweb = {}
 cobweb.name = "cobweb"
 cobweb.nodeLimits = {1, -1}
 cobweb.depth = -1
+cobweb.nodeVisibility = "never"
 cobweb.fieldInformation = {
     color = {
         fieldType = "color"

src/entities/wire.lua

@@ -6,6 +6,7 @@ local wire = {}
 
 wire.name = "wire"
 wire.nodeLimits = {1, 1}
+wire.nodeVisibility = "never"
 wire.fieldInformation = {
     color = {
         fieldType = "color"