code: function findRowMergedLastIndex(tableData, rowIndex, colIndex) {
    const cellData = tableData[rowIndex][colIndex];
    let foundRowIndex = rowIndex;
  
    if (cellData.rowspan > 1) {
      foundRowIndex += cellData.rowspan - 1;
    }
  
    return foundRowIndex;
  }
docs: Find last index of col merged cells.
  @param {Array.<Array.<object>>} tableData - tableData data
  @param {number} rowIndex - row index of base data
  @param {number} colIndex - column index of tabld data
  @returns {number}
  @ignore