comma four: add descriptions

[adeebshihadeh]

also:

It's weird to me that the driving style toggle is highlighted to look like you can change it, but the experimental one is grayed out

i agree that the whole toggle style should look disabled, not just the border.

[sshane]

Hmm, desc are not super simple, will revisit (#36892). We already hide these toggles now: #36890