Mike McDaniel on Monday said the Dolphins are “happy to comply” with any investigation into their handling of quarterback Tua Tagovailoa’s injury during the team’s 21-19 win over the Buffalo Bills. The first-year coach was also noncommittal about Tagovailoa’s availability for Thursday night’s road game against the Cincinnati Bengals. According to multiple reports, the NFL Players’ Association has asked the NFL to look into Tagovailoa’s concussion check after he hit his head and back on the ground after being shoved by inside linebacker Matt Milano in the second quarter of Sunday’s game. Tagova…