Queen’s music is like the air. So if you’re going to give them the biopic treatment, you need to peel back the gloss and the familiarity a little, and give us a peek at the complications, the darkness and the extravagance of an icon like Freddie Mercury. Their tracks have been drilled into the DNA of modern background noise: for Bohemian Rhapsody to feel in any way fresh, it needed risk. It has none. The product of a difficult gestation, Rhapsody arrives after cycling through leads, screenwriters and directors. Bryan Singer gets the sole director credit, but he was fired…