In journalist Bob Woodward’s forthcoming book, former President Donald Trump is said to have had as many as seven phone calls with Russian dictator Vladimir Putin after he left office in 2021. But one former FBI agent is warning that there’s an additional cause for concern that hasn’t yet been explored. NJ.com reported Wednesday that Asha Rangappa — an attorney who spent four years as an FBI agent — thinks Putin may have recordings of his conversations with the former president. Rangappa tweeted that it’s likely the Russian leader is hedging his bets on how the 2024 election turns out by holdi…