Comment 1 for bug 1669161

I don't have an exact solution, but from a MODS/XPath sense, if a <subject> element's first child is a <name> element, then when this subject node is parsed through biblio.extract_metabib_fields, we want the <namePart> children within <name> to be extracted and concatenated as part of the full heading string as usual, but for the "raw_text := raw_text || joiner" portion, there needs to be a test or trigger somewhere in the code such that either the concatenation ignores joiners between <namePart> elements, or that the concatenation only triggers on following-siblings of <name> and not children. Whether that can all be done through edits to biblio.extract_metabib_fields, or if it'd be better to create an entire new function for this bit of unique parsing.

Relatedly, there need to be changes to prevent relator terms in the $e field (which are held in <role><roleTerm> nodes in MODS) from being extracted to browse lists as well (though this has been addressed to some extent in https://bugs.launchpad.net/evergreen/+bug/1772981).