I am able to run Solr with branch_9x without the patch from
https://github.com/apache/solr/pull/3359 and it seems that it works without
errors. Are you sure Solr 9x is affected by this? No objection in
backporting this though, just making sure we are not trying to fix
something that is not an issue
Nice to see it running again.
Please note that for the PRs that have a green checkmark you still have to
do some basic checks before merging, like making sure the license and
notice files are up-to-date with the files of the dependency. More
information about this can be found in help/dependencies