Atm, there's no indication in the UI what the IGP fees will be / what they are
Originally, if IGP fees exceeded the user balance, then it would just say that some error occurred when signing. As a hack in https://github.com/hyperlane-xyz/hyperlane-warp-ui-template/pull/60, I put a check when submitting a tx that would show a very ugly toast with some basic info
We should add a section in the IGP in the review tx details card
This is most important for the EVM. We should still have the ability to support Sealevel ofc via adapters, but for now we can consider just hardcoding an estimated amount