This is prep work for tdf#95377. I need this function to
run when there is no TopContext. This function doesn't do anything
with the context, so in that regard I wonder if it is even
necessary? My guess would be that it is a leftover piece from
discovering the fix for n75883.

However, to avoid causing a regression, I'm just pulling this test
into the calling functions. (Of the three instances
calling this function, two need to be contextless..)

This is not truly NFC because if the followup patch is reverted,
then this one will cause a change. But that is actually OK, because
if my follow-up patch breaks because of these two functions changing
to become contextless, then I'll be better able to pin-point the
reason for the regression.

Original commit adding this function was
commit 2123ede0

Change-Id: I471aa852aa48527d69e0343a2ac28fa6e8acb209
Reviewed-on: https://gerrit.libreoffice.org/48062Reviewed-by: Justin Luth <justin_luth@sil.org>
Tested-by: Justin Luth <justin_luth@sil.org>