The social media sleuth behind Hilaria Baldwin’s stunning Spanish-accent scandal says she fears going public — because Alec Baldwin might beat her up. The woman spoke to the New York Times for its story on the saga involving the popular yoga guru — who was forced to admit this week that she’s just a “white girl” from Boston despite long claiming she was born in Mallorca, Spain and speaking with a questionable accent. But the Twitter denizen talked anonymously, telling the Times “she was scared that Mr. Baldwin … would punch her” if her identity was made public. The “30...