Have you tried this with any previous versions of OpenWrt (such as 22.03.5)? Reason being that 23.05.0 isn't actually officially realeased yet (it is probably still building... more on that in the link below), and it would be good to know if it was working in a previous version and broke with the newest.
FWIW, I also think that aircrack has been broken for a long time, but this is not my area of expertise so I may be mistaken here.