Do not use x11/lxqt-l10n as a master port. Fix install path of qtermwidget-l10n.
Fixes portlint fatal errors about wrongly used masterdir.
Only functional change is in qtermwidget-l10n.
PR: 229413
PR: 229414
PR: 229417
PR: 229418
PR: 229419
PR: 229421
Approved by: swills (mentor)
Differential Revision: https://reviews.freebsd.org/D16185