By Shristi Achar A and Amruta Khandekar Sept 8 (Reuters) - Wall Street's main indexes rose on Friday as megacaps including Apple and Microsoft gained ahead of a fresh inflation reading next week that will provide further clues on the U.S. interest rate trajectory. U.S. Treasury yields edged lower on Friday, helping boost major growth stocks, with Microsoft MSFT.O leading gains, up 1.9%, and Meta Platforms META.O advancing nearly 1%. Shares of Apple AAPL.O rose 1.2% after a two-day selloff following news that Beijing had ordered its central government employees in recent weeks to stop using iPhones at workplaces.