pz_find_pop() returns a context one scope level up the stack. The
popped pinned set is NOT released – a context derived before the
pop may still hold it – and popping never mutates the context it
was called on. At the root it is a no-op returning ctx unchanged.
Examples
page <- pz_open(pz_example("tasks"))
page |>
pz_find(".task-list") |>
pz_find_last(".task") |>
pz_act_click(".task-done") |>
# Back to the whole list, to check the result
pz_find_pop() |>
pz_expect_count(2, target = ".task.done") |>
pz_get_count(target = ".task.done")
#> [1] 2
pz_close(page)
