Default fee to BLD

[samsiegart]

What is the Problem Being Solved?

Some validators don't support IST as a fee, and our wallet bridge code defaults to IST as the fee. Keplr has the option to switch to BLD as a fee token, but it should be default.

Description of the Design

Change to use "stakeCurrency" here

ui-kit/packages/web-components/src/wallet-connection/makeAgoricSigner.ts

Line 23 in 9b9389f

const { coinMinimalDenom: denom } = stableCurrency;

Security Considerations

Scaling Considerations

Test Plan