batch_size not working for temporal_problem.cell_transition

[jonas2612]

batch_size has no influence on memory consumption

[MUCDK]

batch_size is only used in aggregation=="cell", but not in aggregation=="annotation".

@ArinaDanilina could you please see whether you can fix this? Just adapt what we do in the aggregation=="cell" statement to the aggregation="annotation" statement, i.e. we want to loop over the rows to construct the transition matrix.

Let me know if you need help.