Resolves: tdf#104989 a matrix/array formula cell needs to have dimensions

Most spreadsheet functions don't need it, but some may.

Change-Id: I954acaa0a64c4dac8d15acd5b3f404019a7e0bce

sc/source/ui/unoobj/funcuno.cxx

@@ -592,6 +592,8 @@ uno::Any SAL_CALL ScFunctionAccess::callFunction( const OUString& aName,
             pDoc, aFormulaPos, aTokenArr, formula::FormulaGrammar::GRAM_API,
             mbArray ? ScMatrixMode::Formula : ScMatrixMode::NONE );
         pFormula = pDoc->SetFormulaCell(aFormulaPos, pFormula);
+        if (mbArray && pFormula)
+            pFormula->SetMatColsRows(1,1);  // the cell dimensions (only one cell)
 
         //  call GetMatrix before GetErrCode because GetMatrix always recalculates
         //  if there is no matrix result