Blender Git Loki

Fix #30716: Clamp To Constraint Locks up Blender after a while.

Issue was caused by object moved really far away (not just actually issue,
it's just about long mouse gesture and X-axis orientation which projects
position to quite large X-axis value) and for this location start offset
from curve length was calculating iteratively which takes plenty of time for
short curves.

Replace iterative search of offset with formula which seems to be working
in the same way and should be a bit more accurate.