CUPERTINO, Calif. (AP) — After stumbling out of the starting gate in Big Tech’s pivotal race to capitalize on artificial intelligence, Apple tried to regain its footing Monday at its annual Worldwide Developers Conference.The presummer rite, which attracted thousands of developers from nearly 60 countries to Apple’s Silicon Valley headquarters, was more subdued than the feverish anticipation that surrounded the event during the previous two years. In 2023, Apple unveiled a mixed-reality headset that has been little more than a niche product, and last year WWDC trumpeted its first major foray into the AI craze with an array of new...