open in external browser is broken with electron 24

[squalou]

I hate electron

[squalou]

https://stackoverflow.com/questions/32402327/how-can-i-force-external-links-from-browser-window-to-open-in-a-default-browser

[squalou]

on("new-window") was deprecated for a long time, my bad. Replaced by

    mainWindow.webContents.setWindowOpenHandler(({ url }) => {
        handleRedirect(undefined, url);
        return { action: 'deny' };
      });