fix: eraser can handle dots without regressing prior performance improvements (#9946)

Co-authored-by: Márk Tolmács <mark@lazycat.hu>

packages/math/src/segment.ts

@@ -177,3 +177,19 @@ export function lineSegmentIntersectionPoints<
 
   return candidate;
 }
+
+export function lineSegmentsDistance<Point extends GlobalPoint | LocalPoint>(
+  s1: LineSegment<Point>,
+  s2: LineSegment<Point>,
+): number {
+  if (lineSegmentIntersectionPoints(s1, s2)) {
+    return 0;
+  }
+
+  return Math.min(
+    distanceToLineSegment(s1[0], s2),
+    distanceToLineSegment(s1[1], s2),
+    distanceToLineSegment(s2[0], s1),
+    distanceToLineSegment(s2[1], s1),
+  );
+}