Fix Woocommerce additional feature code

We want to use percentage discount coupons but add maximum amount to such coupons.

Currently using a code snipped to recalculate the cart value and it works perfectly. But the recalculated cart value is not picked up by Paytm Gateway plugin.

Stackoverflow - https://stackoverflow.com/questions/71447836/woocommerce-update-order-value-after-updating-cart-discount