Ah, I see what you mean.
As you have seen yourself (probably, going by your username), /e/OS got it implemented.
If it’s not there in LineageOS, perhaps the LineageOS maintainer(s) for the Fairphone 6 could have a look at how /e/OS did it, time and priorities allowing, perhaps just ask them … [OFFICIAL] LineageOS 23 for The Fairphone (Gen. 6)