Distance prediction shows crazy numbers if player crouches early

[jvnipers]

Distance prediction has hardcoded -9.0u offset and dynamically checking for it gave me bad results
https://github.com/FemboyKZ/movementhud/blob/master/addons/sourcemod/scripting/movementhud/movement.sp#L302

If you have ideas on how to fix/implement this properly, please let me know or create a pr