message: test: fix ProtocolIntegrationTest.LargeRequestMethod flake
  Fixes
diff: @@ -1557,6 +1557,7 @@ TEST_P(ProtocolIntegrationTest, LargeRequestMethod) {
  ASSERT(downstreamProtocol() == Http::CodecClient::Type::HTTP2);
  if (upstreamProtocol() == FakeHttpConnection::Type::HTTP1) {
  auto response = codec_client_->makeHeaderOnlyRequest(request_headers);
  + fake_upstreams_[0]->set_allow_unexpected_disconnects(true);
  ASSERT_TRUE(
  fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
  response->waitForEndStream();
  