patch 9.0.0183: extra space after virtual text when 'linebreak' is set

Problem:    Extra space after virtual text when 'linebreak' is set.
Solution:   Do not count virtual text when getting linebreak value.
            (closes #10884)

src/testdir/test_textprop.vim

@@ -1878,6 +1878,26 @@ func Test_prop_in_linebreak()
   call delete('XscriptPropLinebreak')
 endfunc
 
+func Test_prop_with_linebreak()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+      vim9script
+      set linebreak
+      setline(1, 'one twoword')
+      prop_type_add('test', {highlight: 'Special'})
+      prop_add(1, 4, {text: ': virtual text', type: 'test', text_wrap: 'wrap'})
+  END
+  call writefile(lines, 'XscriptPropWithLinebreak')
+  let buf = RunVimInTerminal('-S XscriptPropWithLinebreak', #{rows: 6, cols: 50})
+  call VerifyScreenDump(buf, 'Test_prop_with_linebreak_1', {})
+  call term_sendkeys(buf, "iasdf asdf asdf asdf asdf as\<Esc>")
+  call VerifyScreenDump(buf, 'Test_prop_with_linebreak_2', {})
+
+  call StopVimInTerminal(buf)
+  call delete('XscriptPropWithLinebreak')
+endfunc
+
 func Test_prop_after_tab()
   CheckRunVimInTerminal