I have never heard of aluminium foil liners for muffins. I Googled and they look like they should be sturdy enough for the muffins. I would use them.
No, they won't spark or arc in your oven if you use the convection setting. They might if you use it on the microwave setting, but probably just won't let the heat through to your muffin batter.
May you live as long as you wish and love as long as you live.
Robert A. Heinlein