Reget position_type as the block or type may have changed, tdf#123736 related

Change-Id: I2faf3e74d95cb1f3088f20cbb7de7ba965a6de21
Reviewed-on: https://gerrit.libreoffice.org/69358Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins

sc/source/core/data/column3.cxx

@@ -2217,6 +2217,9 @@ bool ScColumn::SetFormulaCells( SCROW nRow, std::vector<ScFormulaCell*>& rCells
 
     CellStorageModified();
 
+    // Reget position_type as the type may have changed to formula, block and
+    // block size changed, ...
+    aPos = maCells.position(nRow);
     AttachNewFormulaCells(aPos, rCells.size(), aNewSharedRows);
 
     return true;