125086: correct UNO-API implementation for <com::sun::star::text::XTextField> in Writer to reflect changes made for the in-place editing of Input Fields

	cherry-picked from trunk



git-svn-id: https://svn.apache.org/repos/asf/openoffice/branches/AOO410@1602856 13f79535-47bb-0310-9956-ffa450edef68