The “Enola Holmes” movies have done nothing so much as chart Millie Bobby Brown’s evolution from child actor to movie star. She was 16 when the first “Enola Holmes” debuted in 2020. As “Enola Holmes 3” arrives on Netflix, she’s 22. And all three movies have been driven by Brown’s natural charisma. The first two were directed by Harry Bradbeer, a veteran of “Fleabag,” and they delighted in her breaks of the fourth wall. “Enola Holmes” runs on her asides, glances and eyebrow raises.