exporting to PDF fails on MacOS with recent NSS

[Stephan Bergmann]

On 05.03.25 08:59, Noel Grandin wrote:
> Noting that this test works on my ARM mac, so it might be an x86 mac issue.

For me, on ARM mac, cherry-picking 
<https://gerrit.libreoffice.org/c/core/+/181773/7> and dropping 
external/nss/assert.patch.1 from external/nss/UnpackedTarball_nss.mk. 
running CppunitTest_vcl_pdfexport fails by hitting that assert