child_labels = "hidden" should not affect path

[waddella]

on rtables version 0.5.0 the row paths get displayed incorrect when setting child_labels = "hidden" in split_rows_by.

here is an example:

library(rtables)
library(dplyr)

df <- expand.grid(
  ARM = factor(paste("ARM", c("A", "B"))),
  FCT = factor(c("f1", "f2"))
) %>%
  mutate(val = 1:n())

df

s_test <- function(df, ...) in_rows(mn = 1, sd = 2)

lyt <- basic_table() %>%
  split_cols_by("ARM", ref_group = "ARM A") %>%
  split_rows_by("FCT", child_labels = "hidden") %>%
  analyze("val", afun = s_test)

tbl <- build_table(lyt, df)
row_paths_summary(tbl)

value_at(tbl, c("FCT", "f1", "val", "mn"), c("ARM", "ARM A"))

It should have the path as I specified in the value_at call above.

[gmbecker]

Fixed in the above commit with regression test.