bug: Bytes will not work properly if last element is not 16 bytes

[ermvrs]

Bytes will not work properly if last element is not 16 bytes

https://github.com/Digine-Labs/rosettacontracts/blob/main/src/utils/bytes.cairo

rosettacontracts/src/accounts/types.cairo

Line 20 in c18192d

pub calldata: Span<u128> // Calldata len must be +1 directive len