patch 9.0.1325: 'colorcolumn' highlight wrong with virtual text above

Problem:    'colorcolumn' highlight wrong with virtual text above.
Solution:   Adjust column of 'colorcolumn' for text propertly. (closes #12004)
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index d7e34e2..158896f 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -2801,6 +2801,11 @@
   call term_sendkeys(buf, ":set list\<CR>")
   call VerifyScreenDump(buf, 'Test_prop_above_below_empty_2', {})
 
+  call term_sendkeys(buf, ":set nolist\<CR>")
+  call term_sendkeys(buf, ":set colorcolumn=10\<CR>")
+  call term_sendkeys(buf, ":\<CR>")
+  call VerifyScreenDump(buf, 'Test_prop_above_below_empty_3', {})
+
   call StopVimInTerminal(buf)
 endfunc