Automatic recalculation of list price/gross price when changing discount on sales quote line

This issue caused incorrect calculation of the list price/gross price when changing the discount on a sales quote line that was linked to an item with a sales price different from the list price of the quote line. The same issue also occurred for quote lines linked to a calculation. This has now been fixed, ensuring that the list price/gross price is correctly recalculated when changing the discount on a sales quote line.