ATHENS, Greece—Vangelis, the Greek electronic composer who wrote the Academy Award-winning score for the film “Chariots of Fire” and music for dozens of other movies, documentaries, and TV series, has died at 79. Greek Prime Minister Kyriakos Mitsotakis and other government officials expressed their condolences Thursday. Greek media reported that Vangelis—born Evangelos Odysseas Papathanassiou—died in…