Allows to start performing a swap when no token on the balance

[Andrew718PLTS]

Preconditions:

1. Should have a wallet without any token on the balance that presented in the app.

STR:

1. Navigate to the app with connected wallet.
2. Select any token with no balance.
3. Click the "Continue" button.
4. Click the "Swap" button the confirmation state
5. Ensure the "Performing Swap" popup is opened and tx is not sent

Actual Result:

Allows to start performing a swap when no token on the balance

Expected Result:

The button state is changed to "Amount exceeds balance"

Attachments:

Private Zenhub Video

[Andrew718PLTS]

The bug was fixed in the scope of this PR