Fix forward calculation in PathFollow3D for the position at the end of the curve
Fix forward calculation in PathFollow3D for the position at the end of the curve

(cherry picked from commit e23f6a5bba79e995642610fd0e128b49414f5d9f)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot