* Fix speed-up/cancel: don't update existing transaction data
* Move retryTxMeta state management to useGasFeeInputs.js
* Handle initial retryTxMeta set if no transaction is passed to useGasFeeInputs
* Ensure previousGas is use on retry transaction if it is available in useGasFeeInputs
* Remove update transaction mock and correctly test gas fee increase scenarios now that updateTransaction used in cancel-speedup is defined on the front end
