avoid std::out_of_range thrown by mdds (tdf#122643)

Calling GetLastDataRow/Pos() with MAXROW as the last row is apparently
fine, but if that's an invalid row, but anything beyond that is not ok.
ScDependantsCalculator::trimLength() may use such larger "last" row
value because it works on a range of cells.

Change-Id: I819a4d20a4765e23af6208df5f2e208ac44b694c
Reviewed-on: https://gerrit.libreoffice.org/68349
Tested-by: Jenkins
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>
(cherry picked from commit beba45a5)
Reviewed-on: https://gerrit.libreoffice.org/68512

sc/source/core/data/column2.cxx

@@ -1305,7 +1305,7 @@ SCROW ScColumn::GetLastDataPos() const
 SCROW ScColumn::GetLastDataPos( SCROW nLastRow, bool bConsiderCellNotes,
                                 bool bConsiderCellDrawObjects ) const
 {
-    sc::CellStoreType::const_position_type aPos = maCells.position(nLastRow);
+    sc::CellStoreType::const_position_type aPos = maCells.position(std::min(nLastRow,MAXROW));
 
     if (bConsiderCellNotes && !IsNotesEmptyBlock(nLastRow, nLastRow))
         return nLastRow;