[Widget Optimization Advice] If the source token and target token is the same, give the ui to let user sign a normal transfer tx

[Ayuilos]

I like this widget very much👍, but when the situation mentioned in title happened, I will see "No routes available". In fact this route just downgrade to a "normal transfer".

This will happen when I launch a user deposit process, users swap any of token they have to USDC on Base to wallet I specified, but if they already have USDC on Base, they can not finish this process in the Widget.

It's not a good ux, I can handle this in my code but this will lead to a fragmented user experience, so I think it's better that Widget just resolve this problem.