Function encode_partial_note_private_message
pub fn encode_partial_note_private_message<PartialNotePrivateContent>(
partial_note_private_content: PartialNotePrivateContent,
owner: AztecAddress,
storage_slot: Field,
randomness: Field,
note_completion_log_tag: Field,
) -> [Field; <PartialNotePrivateContent as Packable>::N + 5]
Creates the plaintext for a partial note private message (i.e. one of type PARTIAL_NOTE_PRIVATE_MSG_TYPE_ID).
This plaintext is meant to be decoded via [decode_partial_note_private_message].