By Matt Hladik You know things are going poorly when your home fans are chanting for Mason Rudolph in the first half. That’s where things are right now for Mitchell Trubisky in Pittsburgh. The veteran quarterback, who has been pressed into starting duty due toKenny Pickett’s injury, has been booed repeatedly through the first quarter-and-a-half of action on Thursday Night Football. The Steelers currently find themselves trailing the 2-10 Patriots 21-3 midway through the second period. Trubisky is just 4-of-9 passing for 31 yards and an interception that set up one New England touchdown. He als…