By Elizabeth Howcroft, Samuel Indyk and Gertrude Chavez-Dreyfuss LONDON/NEW YORK (Reuters) – The meltdown in TerraUSD, one of the world’s largest stablecoins, rippled through cryptocurrency markets on Thursday, pushing another major stablecoin Tether below its dollar peg and sending bitcoin to 16-month lows. Cryptocurrencies have been swept up in a sell-off in risk assets, which has picked up steam this week as data showed U.S. inflation running hot, deepening investor fears about the economic impact of aggressive central bank tightening. The sell-off has taken the combined market value of all…