improve UX on the Keystone Confirmation + Sign transaction screens

[decentralistdan]

Why are we doing this?

• in the Keystone sending flow, it's way too easy to hit the "Cancel" button unintentionally.

What are we doing?

• on the Send confirmation screen

  • flip the confirm button with the cancel button

• on Sign Transaction screen -> add a Rejection Bottom Sheet

  • flip the Get Signature button with the Reject button

  • add a warning destructive color to the Reject button

  • add a bottom sheet that gets triggered once a user taps on the Reject button

    • tapping on the Go back button collapses the bottom sheet

    • Reject signature aborts the transaction flow and routes the user to a cleared Send form

What does success look like?

• as a user it is much easier to follow both the confirm & reject flows without accidentally clicking the other and for the user to have more clarity on the actions they are taking(bottom sheet & warning color)