Temporary disabled "UpdateRenderPackage" if it's called in unit test

Hi Ian, this is for you to look at. Not optimal for sure, but it gets the test cases ```DynamoCoreUITests``` going. I'm sure you'll be able to get to the bottom of this real soon when you wake up. This slowdown starts showing up with this commit, which led to me disabling this method call:

[Label map working for data collection AND IEnumerables](https://github.com/DynamoDS/Dynamo/commit/3cc5861882fba10d744dd2db027ca5cc23ceb790)

Thanks again, man.