Display zero coupon discount!

Display zero coupon discount!

Hello.
We need to display the coupon discount even if it is "zero" (in the cart, in the orders and in the emails).
If there are no discounted items in the cart, shoppers keep entering the coupon many times because nothing changes on the screen:
Video: https://drive.google.com/file/d/1q6GzFuyXBXOwblQVh1cD4wbfo8zcxd7H/view?usp=sharing

Can you please tell me how to change the code to display a zero discount?:



It would also be nice to have a "show / hide zero discount" checkbox in the coupon settings.

Best Wishes

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