www/hiawatha: Update 12.1 => 12.2
While here, sort pkg-plist.
Release Notes:
https://hiawatha.leisink.net/changelog
PR: 294960
Reported by: Paavo-Einari Kaipila <pkaipila@gmail.com> (maintainer)
Approved by: vvd (co-mentor)
MFH: 2026Q2
(cherry picked from commit b638eddc6f77ec28de9a240a05841c2ea2ef9fd4)