[PostGIS] #3776: [raster] ST_DumpAsPolygons() stop differenciate values when they are higher than 1048576

[PostGIS]

#3776: [raster] ST_DumpAsPolygons() stop differenciate values when they are higher
than 1048576
----------------------+---------------------------
  Reporter:  pracine  |      Owner:  dustymugs
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 3.7.0
 Component:  raster   |    Version:  2.3.x
Resolution:  fixed    |   Keywords:  raster
----------------------+---------------------------
Changes (by robe):

 * milestone:  PostGIS GDAL => PostGIS 3.7.0
 * resolution:   => fixed
 * status:  new => closed

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3776#comment:6>
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