Fix bug #55050 - If the start+end row and cell are the same on an AreaPtg, avoid inverting the relative flag

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1614928 13f79535-47bb-0310-9956-ffa450edef68
Fix bug #55196 - Correct XWPF createTOC handling of short style names

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1614930 13f79535-47bb-0310-9956-ffa450edef68