Navigate between top-level menus a bit better
Navigate between top-level menus a bit better

If a menu item was open and we navigate to a new one with the arrow
keys, open that menu and select the first item.

jkoritzinsky/Avalonia,wieslawsoltes/Perspex,sagamors/Perspex,susloparovdenis/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,jkoritzinsky/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,susloparovdenis/Perspex,bbqchickenrobot/Perspex,danwalmsley/Perspex,tshcherban/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia,SuperJMN/Avalonia,MrDaedra/Avalonia,jkoritzinsky/Avalonia,susloparovdenis/Avalonia,AvaloniaUI/Avalonia,susloparovdenis/Perspex,AvaloniaUI/Avalonia,kekekeks/Perspex,SuperJMN/Avalonia,wieslawsoltes/Perspex,jkoritzinsky/Perspex,OronDF343/Avalonia,Perspex/Perspex,akrisiun/Perspex,AvaloniaUI/Avalonia,kekekeks/Perspex,grokys/Perspex,MrDaedra/Avalonia,wieslawsoltes/Perspex,jkoritzinsky/Avalonia,ncarrillo/Perspex,wieslawsoltes/Perspex,jazzay/Perspex,DavidKarlas/Perspex,AvaloniaUI/Avalonia,grokys/Perspex,punker76/Perspex,SuperJMN/Avalonia,OronDF343/Avalonia,Perspex/Perspex,SuperJMN/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia