[PostGIS] #6009: Error of ST_Polygon(raster) function in PostGIS 3.4.3 and 3.5.4

[PostGIS]

#6009: Error of ST_Polygon(raster) function in PostGIS 3.4.3 and 3.5.4
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  Reporter:              |      Owner:  robe
  GISuser5432            |
      Type:  defect      |     Status:  new
  Priority:  high        |  Milestone:  PostGIS 3.5.5
 Component:  raster      |    Version:  3.5.x
Resolution:              |   Keywords:  PostGIS_Raster; Raster;
                         |  ST_Polygon(Raster)
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Changes (by GISuser5432):

 * Attachment "error_sounding_2m.sql" added.

 Restore this into a db called enav. There are 3 rows of raster that
 ST_Polygon(raster) cannot process them!
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6009>
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