message: extend wait times in a c_api test
diff: @@ -4663,9 +4663,10 @@ TEST_CASE("app: flx-sync basic tests", "[c_api][flx][sync]") {
  {
  using namespace std::chrono_literals;
  std::unique_lock<std::mutex> lock{m_mutex};
  - m_cv.wait_for(lock, 300ms, [this]() {
  + bool completed_within_time_limit = m_cv.wait_for(lock, 5s, [this]() {
  return m_state == RLM_SYNC_SUBSCRIPTION_COMPLETE && m_userdata != nullptr;
  });
  + CHECK(completed_within_time_limit);
  return m_state;
  }
  };
  