message: change file buffer type to BLOCK to allow direct IO
diff: @@ -105,7 +105,7 @@ TEST_CASE("Test file buffers for reading/writing to file", "[file_system]") {
  auto fname = TestCreatePath("test_file");
  // create the buffer and fill it with data
  - auto buf = make_unique<FileBuffer>(allocator, FileBufferType::MANAGED_BUFFER, 4096);
  + auto buf = make_unique<FileBuffer>(allocator, FileBufferType::BLOCK, 4096);
  int64_t *ptr = (int64_t *)buf->buffer;
  for (size_t i = 0; i < 10; i++) {
  ptr[i] = i;
  