Strange, FaceID works with one of my Ray Ban’s but not the other. Must be due to the type of lens. G20 lenses pair doesn’t work but the mirror flash does.
My polarized G20 Aviators work fine, as do all of my Oakleys (Fire Iridium Polarized, 2x Black Iridium Polarized) ... but I also have the attention thing turned off. You might want to try that.
My Ray-Ban Wayfarers with non-polarised G-15 green lenses never worked without Require Attention turned off, but I recently had them replaced with polarised G-15 green prescription lenses and they work every time, even with Require Attention on.
try face ID with the new sunglasses and when it fails and asks for your passcode, type it in. After a few times, this will allow it to learn your new sunglasses.