nip46 get_public_key responds with an npub instead of a hex pubkey

[alexgleason]

Current result:

{"error":null,"id":"3728bb79-cfce-490b-b21f-84cdffcc456a","result":"npub1cadgmfjpqhdyhjh0g7dv95h3m0jer76z0qv6s2pu534v2rdf8afq2ayp62"}

Expected result:

{"id":"3728bb79-cfce-490b-b21f-84cdffcc456a","result":"c75a8da64105da4bcaef479ac2d2f1dbe591fb427819a8283ca46ac50da93f52"}

[alexgleason]

Fixed by 923670c