Do multiple fillets in one API call

[adamchalmers]

KCL's fillet function takes an array of edges to fillet. Previously this would do n fillet API commands, one per edge. This PR combines them all into one call, which should improve performance. Here's a typical example, from a KCL artifact command snapshot:

Besides performance, this should fix a bug where some KCL fillets would fail, when they should have succeeded. Example from @max-mrgrsk:

sketch001 = startSketchOn(XY)
  |> startProfile(at = [-12, -6])
  |> line(end = [0, 12], tag = $seg04)
  |> line(end = [24, 0], tag = $seg03)
  |> line(end = [0, -12], tag = $seg02)
  |> line(endAbsolute = [profileStartX(%), profileStartY(%)], tag = $seg01)
  |> close()
extrude001 = extrude(
       sketch001,
       length = 12,
       tagEnd = $capEnd001,
       tagStart = $capStart001,
     )
  |> fillet(
       radius = 5,
       tags = [
         getCommonEdge(faces = [seg02, capEnd001]),
         getCommonEdge(faces = [seg01, capEnd001]),
         getCommonEdge(faces = [seg03, capEnd001]),
         getCommonEdge(faces = [seg04, capEnd001])
       ],
     )

This program fails on main, but succeeds on this branch.

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Name	Status	Preview	Comments	Updated (UTC)
modeling-app	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 22, 2025 9:25pm

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #6750 will not alter performance

_{Comparing achalmers/fillets-again (8ba45e9) with main (4e2deca)}

Summary

✅ 80 untouched benchmarks