patch 9.0.0451: virtual text "above" does not work with 'nowrap'

Problem:    Virtual text "above" does not work with 'nowrap'.
Solution:   Do wrap the line after. (closes #11084)
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index 6e3ca3b..aaf9a8e 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -2873,6 +2873,9 @@
   call term_sendkeys(buf, ":set number signcolumn=yes\<CR>")
   call VerifyScreenDump(buf, 'Test_prop_with_text_above_4', {})
 
+  call term_sendkeys(buf, ":set nowrap\<CR>gg$j")
+  call VerifyScreenDump(buf, 'Test_prop_with_text_above_5', {})
+
   call StopVimInTerminal(buf)
 endfunc