JS: when the Cancel button is clicked in ExpressionBox, the redo list should not change
JS: when the Cancel button is clicked in ExpressionBox, the redo list should not change

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim