net-p2p/namecoin: Update to 24.0

A few minor changes made to submitted patch:

• Switch PORTVERSION to DISTVERSION
• Use USES= localbase for UPNP option
• Disable autodetection of sqlite when WALLET option is selected
• Fix plist for net-p2p/namecoin-utils

Changelog: https://github.com/namecoin/namecoin-core/releases/tag/nc24.0

PR: 270753