message: fix elements not properly being pushed to the json array
diff: @@ -310,7 +310,7 @@ namespace NovelRT::ResourceManagement::Desktop
  newMemberJson["length"] = member.length;
  newMemberJson["sizeOfSerialisedDataInBytes"] = member.sizeOfSerialisedDataInBytes;
  - memberMetadataJson.emplace_back(newMemberJson);
  + memberMetadataJson.push_back(newMemberJson);
  }
  j["memberMetadata"] = memberMetadataJson;
  