displaying improper fee metadata

[TalDerei]

In the process of prax-wallet/prax#85 and #1419, which specifically addressed the rendering of fees in the transaction approval dialogue and transaction details page for swaps, there have been several stacked changes that seemed to have caused a regression. As a result, the proper fee denomination is no longer being rendered correctly in the approval dialogue and transaction details page.

Additionally, the fee estimation in minifront needs to display the proper fee denom. cc @vacekj

[TalDerei]

update: cargo run --release --bin pd testnet generate produces a testnet genesis file where the FeeParameters are set to zero, which accurately reflects the regressions we're seeing on the testnet.

      GasPrices {
            "asset_id": {
              "inner": "KeqcLzNx9qSH5+lcJHBB9KNW+YPrBk5dKzvPMiypahA="
            },
            "block_space_price": "1000",
            "compact_block_space_price": "5000", 
            "verification_price": "1000", 
            "execution_price": "1000"
          },
      }

On mainnet, the fee parameters in the genesis file are non-zero, so this is not an issue there. To sanity check, modifying the testnet genesis parameters to match the mainnet genesis parameters resolves this.

However, the fee estimation in minifront using the fixed staking asset denomination remains incorrect.