x11-wm/nscde: update to 1.4

Port changes:

• imagemagick dependency removed from options, relying on DEFAULT versions in /etc/make.conf instead
• added option for choosing ksh version; default switched to ksh2020 because it compiles and works on arm64
• add WWW to pkg-descr
• convert pkg-message to UCL format

Upstream changes: https://github.com/NsCDE/NsCDE/releases/tag/1.4

PR: 260219
Reported by: Chris Moerz <freebsd@ny-central.org> (maintainer)