Sculk shriekers are not activated when the player is riding something

The bug

When a player rides over a sculk shrieker while on a mount such as a pig, horse, strider, boat or minecart, it does not activate.

Sculk sensors also do not send signals from player-ridden mounts to the sculk shrieker.

This exploit would allow players to avoid summoning the warden simply by riding a horse or other mount through the deep dark.