The Vegas Golden Knights have signed forward Pavel Dorofeyev to a one-year deal with an AAV of $825,000, the team announced Wednesday. The former 2019 third-round pick (No. 79 overall) played in 18 games for the Golden Knights during the 2022-23 season, recording seven goals and nine points in a 10-game stretch from March 12 through April 3. After missing several months with an injury…