SDL 3 has more misc buttons for "additional controller buttons" (e.g. left/right trigger clicks on a GameCube controller, or for the second touchpad click on the Steam Controller) which use these additional named Misc buttons. Taken from [SDL_GamepadButton](https://wiki.libsdl.org/SDL3/SDL_GamepadButton)
Verify a touchpad is present before polling it for input. Without this
check the Debug log is spammed with the message "error: Parameter
'touchpad' is invalid" if you have a controller without a touchpad.
One would think every touchpad supports at least 1 finger, but in case
there's some weird edge case check the finger count to be sure.
JosJuice