widget: Do not intercept Ctrl+F1
widget: Do not intercept Ctrl+F1

https://bugzilla.gnome.org/show_bug.cgi?id=726438

jessevdk/vte,rvu95/vte,thestinger/vte-ng,saitoha/vte-sixel,jessevdk/vte,flaxandteal/gasket-vte,rvu95/vte,saitoha/vte-sixel,thestinger/vte-ng,jessevdk/vte,jessevdk/vte,flaxandteal/gasket-vte,rvu95/vte,thestinger/vte-ng,pjm0616/vte,pjm0616/vte,saitoha/vte-sixel,flaxandteal/gasket-vte,rvu95/vte,flaxandteal/gasket-vte,pjm0616/vte