Shop InputBox input doesn't close together with the shop

[kontownik]

Steps to reproduce:

1. Open Tool Shop NPC
2. Pick up Red Potion, InputBox for item count will pop up.
3. Cancel Shop
   (issue: input remains)
4. Click at "OK" at count InputBox.

Actual result:

Online.js?20240411e:577422 Uncaught TypeError: Cannot read properties of undefined (reading 'discountprice')
    at transferItem (Online.js?20240411e:577422:52)
    at InputBox.onSubmitRequest (Online.js?20240411e:577517:5)
    at UIComponent.validate (Online.js?20240411e:477513:9)
    at HTMLButtonElement.dispatch (Online.js?20240411e:5525:9)
    at elemData.handle (Online.js?20240411e:5201:28)

Expected result:

• When shop is cancelled (step3) InputBox should be hidden as well. That's how RO client behave.
• "Input name" placeholder should be change to dragged item name, Red Potion in this case.