message: [nat64] add NAT64 to ApplyFeatureFlagList
diff: @@ -195,7 +195,9 @@ otError ControllerOpenThread::ApplyFeatureFlagList(const FeatureFlagList &aFeatu
  // Save a cached copy of feature flags for debugging purpose.
  mAppliedFeatureFlagListBytes = aFeatureFlagList.SerializeAsString();
  - // TODO: apply the feature flags through API.
  +#if OTBR_ENABLE_NAT64
  + otNat64SetEnabled(mInstance, aFeatureFlagList.enable_nat64());
  +#endif
  return error;
  }
  