What – or who – turned young real-estate executive Donald Trump into the tangerine menace who just refuses to go away and could be on his way to winning a second term next month? This is the question at the heart of The Apprentice, the English-language debut from Iranian-Danish director Ali Abbasi (Border, Holy Spider) – a conventional but compelling biopic scripted by journalist Gabriel Sherman, which focuses on the formative years of the man who would one day worm himself into the White House. Set in New York between the 1970s and 1980s, we meet The Donald (Sebastian Stan) in a Manhattan clu…