[PostGIS] #6064: Silent topology corruption with topology.TopoGeo_addLinestring

[PostGIS]

#6064: Silent topology corruption with topology.TopoGeo_addLinestring
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 Reporter:  strk      |      Owner:  strk
     Type:  defect    |     Status:  new
 Priority:  medium    |  Milestone:
Component:  topology  |    Version:  master
 Keywords:            |
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 As of commit [67ff872e2d4b8b46e6d412dae592e89480fc668c/git] a topology can
 be corrupted without exception by using TopoGeo_addLinestring.

 Test attached.

 This is a spin-off of #6062

 Full version:
 {{{
 POSTGIS="3.7.0dev 3.6.0rc2-417-g67ff872e2" [EXTENSION] PGSQL="180"
 GEOS="3.14.2dev-CAPI-1.20.5" PROJ="9.6.0 NETWORK_ENABLED=OFF
 URL_ENDPOINT=https://cdn.proj.org USER_WRITABLE_DIRECTORY=/tmp/proj
 DATABASE_PATH=/usr/share/proj/proj.db" (compiled against PROJ 9.6.0)
 LIBXML="2.9.14" LIBJSON="0.18" LIBPROTOBUF="1.5.1" WAGYU="0.5.0
 (Internal)" TOPOLOGY
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6064>
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