dont open the initial window if a window has already been opened via the application-file-handler
dont open the initial window if a window has already
been opened via the application-file-handler

closes PR 13811

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket