[Request]: Check if TransactionSigner::iotaPublicKeyBytes() is still needed

[chrisgitiota]

Feature description

In the past we were facing problems with converting a public key from TS to Rust and vice-versa.

For this reason the TransactionSigner interface offers two functions, iotaPublicKeyBytes: () => Promise<Uint8Array> and publicKey: () => Promise<PublicKey> to access the public key.

We might have fixed the issue that made unreliable the conversion of a public key from TS to Rust and vice-versa.

This should be checked. If conversion is no more unreliable we should remove the function iotaPublicKeyBytes() from the TransactionSigner interface.

Motivation

Avoid unneeded code

Requirements

Open questions

No response

Are you planning to do it yourself in a pull request?

Yes