patch 9.0.0153: no fold and sign column for virtual text with "below" align

Problem:    No fold and sign column for virtual text with "below" align and
            'nowrap'.
Solution:   Go back to draw state WL_START when moving to the next line.
            (closes #10851)
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index 0ecac6d..dfead1d 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -2443,6 +2443,9 @@
   let buf = RunVimInTerminal('-S XscriptPropsAfterNowrap', #{rows: 8, cols: 60})
   call VerifyScreenDump(buf, 'Test_prop_with_text_after_nowrap_1', {})
 
+  call term_sendkeys(buf, ":set signcolumn=yes foldcolumn=3\<CR>")
+  call VerifyScreenDump(buf, 'Test_prop_with_text_after_nowrap_2', {})
+
   call StopVimInTerminal(buf)
   call delete('XscriptPropsAfterNowrap')
 endfunc