SAN DIEGO — Leave it to A.J. Preller to strike first. Thought to have priced himself out of the Padres’ market, Robert Suarez celebrated his breakout season in San Diego with a five-year, $46 million pact in the first hour of free agency Thursday afternoon. The Padres were also said to be still in talks with Nick Martinez, whose opt-out ahead of Thursday’s deadline was more procedural than a signal that the two sides were indeed parting ways on the heels of the right-hander’s breakout in a multi-role job in 2022. Martinez would like to start and that’s certainly one need the Padres will have t…