By Andrew Gould Irv Smith Jr. suffered a setback on his road back to the field, but it might not derail his comeback. The Minnesota Vikings tight end, who missed all of 2021 recovering from a meniscus injury, left Monday’s practice with an undisclosed ailment. Head coach Kevin O’Connell said Smith underwent thumb surgery on Tuesday. However, he’s still expected to be ready to start the season. The No. 50 pick in the 2019 NFL Draft showed some promise to start his career. While he didn’t receive many receiving opportunities out of the gate, the Alabama alumnus has secured 73.3 percent of his ta…