There are two philosophies on tender coils, but in the end, it’s not really that critical and neither will alter functionality that much
“Normally” you would want the tender/dead coils at the top so that they don’t become unsprung weight.
But on a twist beam like ours, the lower spring seat pivots as the beam raises and lowers. The stock spring forms a banana shape when this happens but if you have a very stiff spring and a very soft tender, the tender will bend a lot more than the main spring, meaning that if the tender is up too, the main spring will “rock” with the beam as it goes up and down. You can counter this by installing the tender at the bottom.
The latter is usually more relevant especially if you’ve installed a coilover spring with a very soft “zero rate” helper spring. But with a variable/dual rate spring like an aftermarket lowering spring, the tenders aren’t actually that soft.
Neither situation really matters significantly unless you are optimizing things to 9/10ths, so just install as the manufacturer intended (text upright) and you’ll be fine.