feat(swap): Add warning for SafeDMT

[tehw0lf]

This is not a listing request, just a request for a warning modal. Please let me know if there's any additional work to be done.

This pull request adds a warning when trying to purchase SafeDMT in the exchange.

When trying to buy our token, we need to adjust the last digit in order to be able to purchase without failing transactions. This seems fishy to new members, which is why I'd like to contribute a warning modal for our token.

[netlify[bot]]

:construction_worker: Deploy request for pancake-exchange-v1 accepted.

:hammer: Explore the source changes: 459df487ec49fbdcd5912346efb2a2af7abb4896

:mag: Inspect the deploy log: https://app.netlify.com/sites/pancake-exchange-v1/deploys/60b2961bf68225000860224c