For 22 months, Walt Disney Co. has been run by “the two Bobs”: Bob Iger, the visionary leader who meticulously built an entertainment juggernaut; and Bob Chapek, his loyal lieutenant and successor as chief executive. With Disney’s cash spigots turned off, the company furloughed or laid off more than 100,000 workers, many of whom were affectionately known as “cast members,” …