Fix DevTools hit testing.
Fix DevTools hit testing.

Filter out invisible controls.

AvaloniaUI/Avalonia,Perspex/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,susloparovdenis/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Perspex,susloparovdenis/Avalonia,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,susloparovdenis/Perspex,grokys/Perspex,MrDaedra/Avalonia,OronDF343/Avalonia,SuperJMN/Avalonia,wieslawsoltes/Perspex,SuperJMN/Avalonia,akrisiun/Perspex,MrDaedra/Avalonia,jkoritzinsky/Avalonia,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,Perspex/Perspex,OronDF343/Avalonia,susloparovdenis/Perspex,wieslawsoltes/Perspex,grokys/Perspex,wieslawsoltes/Perspex,wieslawsoltes/Perspex,SuperJMN/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,wieslawsoltes/Perspex,jazzay/Perspex,AvaloniaUI/Avalonia,wieslawsoltes/Perspex