The same copper connections are also listed in copper_connection_definitions.
Reproduction steps:
- Create a new Freeplay.
 - Ghost-place two electric poles near each other.
 - Run the console command: /c game.print(#game.player.selected.circuit_connection_definitions)
 - The output will be: 1
 - After reviving the ghosts, the output will be: 0
 

