Robot_Toolkit: No results are sometimes extracted when the amount of results gets to big

#### Description:

When reading results from Robot and the result buffer gets to big, no results are returned. Could look into pulling the results in multiple buffers instead of just one bug chunk in the API calls, internally in the ReadResults method. This could be done by checking the number of cases as well as number of elements requested results for.

#### How to replicate:

Run a big model (a few thousand elements) tens of cases and try to extract for example BarForces.

#### Expected behaviour:

For all the requested results to be returned

#### Test file(s):