Using `iter-yield` with `seq.el` and mapping functions?

[Okamsn]

Hello,

Is it possible to use `iter-yield` via mapping functions and `seq.el`
functions? For example, when I do

     (setq iter-maker (iter-lambda (x)
                        (seq-doseq (item x)
                          (iter-yield item))))
     (setq my-iter (funcall iter-maker '(1 2 3)))
     (iter-next my-iter)

I get an error "(void-function cps-internal-yield)".

When I try

     (setq iter-maker (iter-lambda (x)
                        (seq-do #'iter-yield x)))
     (setq my-iter (funcall iter-maker '(1 2 3)))
     (iter-next my-iter)

I get the error "(error "‘iter-yield’ used outside a generator")".

These are both with lexical binding enabled on Emacs 28.1.

Can iterators be used with these functions and other mapping functions,
such as `mapatoms`, `mapc`, and the like?

Thank you.