This reverts commit a2031de849da52aa85b7e4326c0112ed7e5b5672. The patch itself seems OK, but it exposes a bug in lxml or libxml2-2.9.12 which was just released. This is being resolved in https://gitlab.gnome.org/GNOME/libxml2/-/issues/255, but it might be while. So let's revert this for now to unbreak our CI. Fixes #19601.
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