`AmmBid` expects BidMax to be of type `IssuedCurrencyAmount` but it can be a string

[exp0nge]

The current JSON deserializer expects BidMax to be of IssuedCurrencyAmount, however, as observed on mainnet, this is not always the case:

https://xrpscan.com/ledger/BAA4AF508E9A9CB7685D9E61B82486681E52E9B920904B0650499497F050D8FA Tx https://xrpscan.com/tx/6A8BC948E1309219EA8E14905D0EA9BB94E24429DE5B15CDE8916CDBCE42034B provides a string value of "10"

[nkramer44]

Those fields were typed as IssuedCurrencyAmounts because the docs say that bids are made using LP tokens, though it looks as though the docs are incorrect. I'll work on a fix for this shortly.