x11-toolkits/qt5-declarative: unbreak after 020693c166d1

Project MESSAGE: perl -w /usr/local/lib/qt5/bin/syncqt.pl -module QtQml -version 5.15.8 -outdir /wrkdirs/usr/ports/x11-toolkits/qt5-declarative/work/kde-qtdeclarative-5.15.8p21 -builddir /wrkdirs/usr/ports/x11-toolkits/qt5-declarative/work/kde-qtdeclarative-5.15.8p21 /wrkdirs/usr/ports/x11-toolkits/qt5-declarative/work/kde-qtdeclarative-5.15.8p21
sh: perl: not found

PR: 266007