agent: fix file reception error in postgres (#1647)

Author: spaced4ndy

src/Simplex/Messaging/Agent/Store/AgentStore.hs

@@ -2581,6 +2581,7 @@ getRcvFile db rcvFileId = runExceptT $ do
               SELECT rcv_file_chunk_id, chunk_no, chunk_size, digest, tmp_path
               FROM rcv_file_chunks
               WHERE rcv_file_id = ?
+              ORDER BY chunk_no ASC
             |]
             (Only rcvFileId)
       forM chunks $ \chunk@RcvFileChunk {rcvChunkId} -> do