scantxoutset: support legacy P2PK script type
scantxoutset: support legacy P2PK script type

Applies: https://github.com/bitcoin/bitcoin/pull/12196/commits/94d73d32abe927e74271a7b3eac7ba56658a535e

Signed-off-by: FornaxA <c2760c99f0fe404123eacbb6758752294a6ce72d@servitising.org>

ionomy/ion,ionomy/ion,ionomy/ion,ionomy/ion,ionomy/ion,cevap/ion,cevap/ion,ionomy/ion,cevap/ion,cevap/ion,cevap/ion,cevap/ion