graphics/qt5-wayland: unbreak after 020693c166d1

Project MESSAGE: perl -w /usr/local/lib/qt5/bin/syncqt.pl -module QtWaylandClient -version 5.15.8 -outdir /wrkdirs/usr/ports/graphics/qt5-wayland/work/kde-qtwayland-5.15.8p57 -builddir /wrkdirs/usr/ports/graphics/qt5-wayland/work/kde-qtwayland-5.15.8p57 /wrkdirs/usr/ports/graphics/qt5-wayland/work/kde-qtwayland-5.15.8p57
sh: perl: not found

PR: 266007