By Issam Abdallah, Yara Abi Nader, Laila Bassam and Timour Azhari BEIRUT (Reuters) -Part of the grain silos at Beirut Port collapsed on Sunday just days before the second anniversary of the massive explosion that damaged them, sending a cloud of dust over the capital and reviving traumatic memories of the blast that killed more than 215 people. There were no immediate reports of injuries. Lebanese officials warned last week that part of the silos – a towering reminder of the catastrophic Aug. 4, 2020 explosion – could collapse after the northern portion began tilting at an accelerated rate. “I…