Fix CounCountour Tool: pixel perfect doesnt work after a straight line (

fix aseprite#4256)

src/app/tools/intertwiners.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2018-2022 Igara Studio S.A.
+// Copyright (C) 2018-2024 Igara Studio S.A.
 // Copyright (C) 2001-2018 David Capello
 //
 // This program is distributed under the terms of
@@ -564,7 +564,7 @@ class IntertwineAsPixelPerfect : public Intertwine {
  // point so we can restore it when erasing a point because of
  // pixel-perfect. So we set the following flag to indicate this, and
  // use it in doTransformPoint.
- m_saveStrokeArea = (c == m_pts.size() - 1 && !m_retainedTracePolicyLast);
+ m_saveStrokeArea = (c == m_pts.size() - 1);
  if (m_saveStrokeArea) {
  clearPointshapeStrokePtAreas();
  setLastPtIndex(c);