LazReport, make an event so the programmer can decide if use the internal bookmarks handling on form page or doing custom bookmark handling (like do nothing), this should help when using datasets that do not implemenent persistent bookmarks (on detail datasets) like sqldb, issue 26132

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45037 4005530d-fff6-0310-9dd1-cebe43e6787f