Remove rbind nesting from {tern} - e.g. tabulate_survival_subgroups

[Melkiades]

Remove rbinds from {tern} when not from different data (I think the example case I got could be done with a split as the filtering variable can be the split)

[shajoezhu]

hi @Melkiades , can you explain a bit more, why is this necessary here? potential breaking change, but thats ok

[Melkiades]

hi @Melkiades , can you explain a bit more, why is this necessary here? potential breaking change, but thats ok

The only cases that need rbind are cases with completely different data used. Otherwise, using bind is unnecessary and often creates problematic tables for all downstream processes