[PostGIS] #5708: ValidateTopology (building edge rings) is not easily interruptible

[PostGIS]

#5708: ValidateTopology (building edge rings) is not easily interruptible
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 Reporter:  strk      |      Owner:  strk
     Type:  defect    |     Status:  new
 Priority:  medium    |  Milestone:  PostGIS 3.4.3
Component:  topology  |    Version:  master
 Keywords:            |
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 Interrupting ValidateTopology during the `Building edge rings` step seems
 to be impossible.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5708>
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