Unwrapped MsgTransfer and MsgNftTransfer couldn't be decoded

[yito88]

A transaction with an unwrapped IBC message for token/NFT transfers failed, e.g. when requesting transfers with Hermes, these messages couldn't be decoded.
Through the SDK, all these messages are wrapped and they will be decoded on a node.

We need to add decoding these messages to

namada/crates/ibc/src/lib.rs

Line 326 in 879a326

pub fn decode_message(tx_data: &[u8]) -> Result<IbcMessage, Error> {