Only limit the Bezier curve closest point at the end of the whole curve

[MFraters]

Looking at issue #522, I realized that the end points of slabs and fault (i.e. bezier curves) are not handled properly. The issues stems form wanting to find the closest point to a line consisting of segments. It can happen that the closest point found is just off the segment. In the interior this may be fine (especially if the derivatives are non-continuous, although I should revisit this in the future again because with Bezier Curves they now should be), but it should not happen at the edges of the full line itself.

This part at the end of line lines can be easily tested for, which is what this pull request does. I tested it with the provided example and this fixes the issue in #522.

This may break tests and I need to do some more testing to look if it breaks anything else it should not break.

[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	1.021 ± 0.008 (s=441)	1.020 ± 0.004 (s=444)	-0.2% .. +0.1%
Slab interpolation curved simple none	1.026 ± 0.003 (s=459)	1.028 ± 0.004 (s=420)	+0.2% .. +0.3%
Spherical slab interpolation simple none	1.261 ± 0.004 (s=340)	1.262 ± 0.011 (s=376)	-0.1% .. +0.3%
Slab interpolation simple curved CMS	1.099 ± 0.005 (s=433)	1.099 ± 0.006 (s=389)	-0.1% .. +0.1%
Spherical slab interpolation simple CMS	1.859 ± 0.015 (s=235)	1.864 ± 0.005 (s=251)	+0.1% .. +0.4%
Spherical fault interpolation simple none	1.270 ± 0.004 (s=350)	1.273 ± 0.005 (s=360)	+0.1% .. +0.3%
Cartesian min max surface	2.382 ± 0.021 (s=186)	2.379 ± 0.021 (s=195)	-0.4% .. +0.2%
Spherical min max surface	7.353 ± 0.026 (s=60)	7.369 ± 0.027 (s=65)	-0.0% .. +0.4%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c3188ad) 93.46% compared to head (0580460) 93.46%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #523   +/-   ##
=======================================
  Coverage   93.46%   93.46%           
=======================================
  Files          92       92           
  Lines        6301     6301           
=======================================
  Hits         5889     5889           
  Misses        412      412           

Files	Coverage Δ
source/world_builder/objects/bezier_curve.cc	100.00% <100.00%> (ø)

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[MFraters]

After looking into a few changed test results, the provided test case and some of my more complex models, I think this pull request is ready to merge.

@danieldouglas92, could you have a look at this pull request to see if 1. it resolves the issue in #522, and 2. your models still work.

[danieldouglas92]

I just tested and it does fix the issue! Below are two screenshots with the same .wb and .grd file with and without the changes in this PR showcasing how the fault behaves linearly at depth and not circular