Since Aiden Ruiz was 2 years old, his mom has had to battle with her little slugger to take off his baseball uniform, which he wore with pride after every Little League game. “He would fight with me to take his cleats off,” Christina Ruiz told The Post.  “I had to let him take a nap so I could get his cleats off, so he could go to bed.” It was a clear foreshadowing that the Stony Brook School’s standout shortstop had a bright future on the diamond after senior year, as Ruiz has lots of noise around his name ahead of the 2026 MLB draft in July. “That was always a dream,” said Ruiz, the 38th-ranked draft prospect by Major League Baseball . “I’ve always had that self-confidence when I step on the field that I can turn the game around,” added the soon-to-be high school grad, who is 19 because of a double eighth-grade year due to COVID.…