swap doesnt work with permit2=false

[sirpy]

Bug Description
A clear and concise description of the bug.
When setting the flag permit2={false}
The "Review swap" button is always grey.

Steps to Reproduce

1. set permit2=false in widget
2. try to perform swap

Expected Behavior
user should be able to swap without permit2

Additional Context
The widget should allow to swap also using old permit but also using the regular approve/swap flow in case wallet doesnt support signTypedData