When she was a teenager in Buenos Aires, Victoria Alonso never imagined being an executive producer at Marvel. And now that she’s spent 17 years at the studio, she could see “Black Panther: Wakanda Forever” being nominated for five Oscars — but she never envisioned that in the same year she’d also produce an Oscar-nominated international feature, “Argentina 1985.” As Marvel’s president of physical production, Alonso spends her days meeting on multiple projects at every stage — from location scouts, casting, and visual development to costumes, visual effects, editing, score, and casting.