Here you go. You need to restore the backup from the main menu in key mapper. Please be aware this is for left-hand drive vehicles as the co-ords relate to everything being the right way around

... also, when doing the long press it selects one pedal, then goes back to home screen before finally selecting Android Auto. Obviously you can remove that and change the co-ords to Carplay if you've got an iPhone etc. Good luck!
Actually, it's got me thinking - even though LKA is much improved, I'm wondering if there we can trigger certain actions through 'intent'. If we can find out what the quick menu code is for the LKA icon by name, then we might be able to trigger it using the intent command in key mapper. Idem for one pedal.
There's a nice little app called shortcut maker, which I will try out...