[raster] Fix envelope Contains shortcut in ST_Clip

Patch by Sai-bot

Closes #3457


git-svn-id: http://svn.osgeo.org/postgis/trunk@16940 b70326c6-7e19-0410-871a-916f4a2858ee
1 job for svn-trunk in 31 minutes and 40 seconds (queued for 19 minutes and 18 seconds)
Status Job ID Name Coverage
  Test
passed #111622885
test

00:31:40