[PostGIS] #6065: ValidateTopology fails to report invalid side-labeling

[PostGIS]

#6065: ValidateTopology fails to report invalid side-labeling
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  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  reopened
  Priority:  medium    |  Milestone:  PostGIS 3.7.0
 Component:  topology  |    Version:  master
Resolution:            |   Keywords:
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Comment (by strk):

 I was wrong: `GEOS_CoordSeq_isCCW` gives the right answer. An
 experiemental branch using GEOS for ring orientation is in
 https://gitea.osgeo.org/postgis/postgis/pulls/291
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6065#comment:12>
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