Approve button does not update

[nbgoku]

Describe the bug

On https://bridge.jolnir.taiko.xyz/

If I set the initial token to bridge to be BLL, and set the number of tokens to be 10 - the approve button becomes active and you can click it

But if I decide I want to do HORSE instead and select it from the drop down menu, the approve button remains inactive/unclickable

The only way to make that button work is if I edit the token number - which was currenlty on 10 - also I can simply just click the Backspace button my keyboard and it will activate the button

The Approve button should automatically be active/clickable after simply changing the token I want to bridge from the drop down menu, I shouldn't need to update the number of tokens to activate it

Steps to reproduce

1. https://bridge.jolnir.taiko.xyz/
2. Select any token you want to bridge from the drop down menu
3. Input number of tokens to bridge
4. Notice the Approve button is active/clickable
5. Change the token you want to send from the drop down menu
6. Notice the Approve button is not active/clickable - it should be active/clickable however
7. Click the backspace button on the number of tokens to bridge or update the number
8. Notice the Approve button is active/clickable

Additional context